[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"blog-post-en-voltage-drop-cable-sizing":3,"blog-alternates-blog-post-en-voltage-drop-cable-sizing-voltage-drop-cable-sizing":687,"blog-next-steps-blog-post-en-voltage-drop-cable-sizing-voltage-drop-cable-sizing":3001},{"id":4,"title":5,"articleId":6,"body":7,"category":666,"date":667,"description":668,"extension":669,"image":24,"lastUpdated":670,"locale":671,"meta":672,"navigation":673,"ogImage":674,"path":675,"publishDate":667,"readTime":676,"refreshInterval":677,"seo":678,"seoTitle":679,"slug":6,"stem":680,"tags":681,"__hash__":686},"blog\u002Fblog\u002Fvoltage-drop-cable-sizing.en.md","Voltage Drop Calculation: How Long Can Your Cable Be?","voltage-drop-cable-sizing",{"type":8,"value":9,"toc":637},"minimark",[10,18,25,30,33,36,40,51,60,64,75,97,111,118,122,125,287,290,294,297,377,380,387,391,396,399,404,415,419,422,427,437,441,449,456,460,463,467,499,503,507,510,514,517,521,524,528,536,540,543,546,549,552,556,559,563,566,570,582,586,627],[11,12,13,17],"p",{},[14,15,16],"strong",{},"How long a cable can be is decided by voltage drop: a 2.5 mm² copper cable carrying 16 A at 230 V reaches the usual 5% at about 54 m, and a 1.5 mm² lighting circuit at 10 A reaches the 3% lighting value at about 31 m."," Beyond that, you need a larger cross-section, a shorter route or a sub-distribution board closer to the load. The circuit breaker does not answer this question: it protects the cable against overload but says nothing about the voltage that reaches the appliance. So always check both: does the cable suit the protective device, and does voltage drop stay within the target? The stricter requirement sets the cross-section.",[11,19,20],{},[21,22],"img",{"alt":23,"src":24},"Electricians survey a cable route on site.","\u002Fimages\u002Fblog\u002Feditorial-2026-10-13\u002Fplanelec-voltage-drop-cable-sizing-editorial.webp",[26,27,29],"h2",{"id":28},"when-does-voltage-drop-matter","When does voltage drop matter?",[11,31,32],{},"Typical cases are long runs to a garage, garden room or outbuilding, outdoor lighting, feeders to sub-distribution boards, heat pumps and EV charging points. Besides distance, current, single- or three-phase supply, conductor material, cross-section, nominal voltage and power factor all count.",[11,34,35],{},"Always calculate the complete electrical route from the board. If it consists of several segments, such as the feeder to a sub-board plus the final circuit, their voltage drops add up. Calculating only the last section to the appliance understates the result.",[26,37,39],{"id":38},"what-the-areirgie-requires","What the AREI\u002FRGIE requires",[11,41,42,43,46,47,50],{},"Section 5.2.5 of AREI\u002FRGIE Book 1 (\"Voltage drop\") requires voltage drop to be limited to the values described in the rules of good practice. It sets no percentage. The familiar ",[14,44,45],{},"3% for lighting"," and ",[14,48,49],{},"5% for other final circuits"," come from the IEC\u002FNBN HD 60364-5-52 series and are the usual way those rules of good practice are applied.",[11,52,53,54,59],{},"Subsection 5.2.1.2 b additionally requires voltage drop under normal operating conditions to be compatible with safe operation of the supplied equipment. The second check, cross-section against protection, is governed by Table 4.11 in subsection 4.4.1.4 for domestic installations. It limits the protective device per cross-section but does not prove current-carrying capacity for every installation method. The complete table with the fuse and circuit-breaker columns is in ",[55,56,58],"a",{"href":57},"\u002Fen\u002Fblog\u002Fcable-cross-section-breaker","cable cross-section by circuit breaker",".",[26,61,63],{"id":62},"the-formula","The formula",[11,65,66,70,71,74],{},[67,68,69],"code",{},"L"," is the ",[14,72,73],{},"one-way cable length",", not there and back:",[76,77,78,85,91],"ul",{},[79,80,81,82],"li",{},"single-phase: ",[67,83,84],{},"ΔU = 2 × ρ × L × I × cos φ \u002F S",[79,86,87,88],{},"three-phase: ",[67,89,90],{},"ΔU = √3 × ρ × L × I × cos φ \u002F S",[79,92,93,94],{},"percentage: ",[67,95,96],{},"ΔU% = ΔU \u002F Un × 100",[11,98,99,102,103,106,107,110],{},[67,100,101],{},"ρ"," is resistivity, ",[67,104,105],{},"I"," current and ",[67,108,109],{},"S"," the cross-section in mm². PlanElec calculates with 0.0175 Ω·mm²\u002Fm for copper and 0.029 Ω·mm²\u002Fm for aluminium, a default power factor of 0.95 and the nominal voltage of the circuit: 230 V for single-phase final circuits, and for three-phase circuits the voltage between line conductors (230 V or 400 V). The resistance model leaves out reactance and temperature correction, which makes it a sound preliminary design for homes and small commercial installations.",[11,112,113,114,117],{},"Rearranged for length, it gives the longest permitted one-way run for a chosen limit: ",[67,115,116],{},"L_max = ΔU_max × S \u002F (2 × ρ × I × cos φ)"," for single-phase circuits.",[26,119,121],{"id":120},"maximum-cable-length-per-cross-section","Maximum cable length per cross-section",[11,123,124],{},"The table below uses copper, power factor 0.95 and the full rated current of the breaker as the load. If the actual load is lower, the run can be proportionally longer.",[126,127,128,150],"table",{},[129,130,131],"thead",{},[132,133,134,138,141,144,147],"tr",{},[135,136,137],"th",{},"Circuit",[135,139,140],{},"Cross-section",[135,142,143],{},"Current",[135,145,146],{},"Limit",[135,148,149],{},"Max. one-way length",[151,152,153,171,185,199,214,228,244,260,274],"tbody",{},[132,154,155,159,162,165,168],{},[156,157,158],"td",{},"Lighting, 230 V",[156,160,161],{},"1.5 mm²",[156,163,164],{},"10 A",[156,166,167],{},"3%",[156,169,170],{},"approx. 31 m",[132,172,173,175,177,180,182],{},[156,174,158],{},[156,176,161],{},[156,178,179],{},"16 A",[156,181,167],{},[156,183,184],{},"approx. 19 m",[132,186,187,189,192,194,196],{},[156,188,158],{},[156,190,191],{},"2.5 mm²",[156,193,179],{},[156,195,167],{},[156,197,198],{},"approx. 32 m",[132,200,201,204,206,208,211],{},[156,202,203],{},"Sockets\u002Fappliances, 230 V",[156,205,191],{},[156,207,179],{},[156,209,210],{},"5%",[156,212,213],{},"approx. 54 m",[132,215,216,218,220,223,225],{},[156,217,203],{},[156,219,191],{},[156,221,222],{},"20 A",[156,224,210],{},[156,226,227],{},"approx. 43 m",[132,229,230,233,236,239,241],{},[156,231,232],{},"Appliance circuit, 230 V",[156,234,235],{},"4 mm²",[156,237,238],{},"25 A",[156,240,210],{},[156,242,243],{},"approx. 55 m",[132,245,246,249,252,255,257],{},[156,247,248],{},"Hob\u002FEV charger, 230 V",[156,250,251],{},"6 mm²",[156,253,254],{},"32 A",[156,256,210],{},[156,258,259],{},"approx. 65 m",[132,261,262,265,267,269,271],{},[156,263,264],{},"Three-phase 3N~400\u002F230 V",[156,266,191],{},[156,268,179],{},[156,270,210],{},[156,272,273],{},"approx. 108 m",[132,275,276,278,280,282,284],{},[156,277,264],{},[156,279,251],{},[156,281,254],{},[156,283,210],{},[156,285,286],{},"approx. 130 m",[11,288,289],{},"The values apply to a single segment from the board. If the final circuit is fed from a sub-board, subtract the feeder's voltage drop first.",[26,291,293],{"id":292},"which-voltage-applies-to-your-circuit","Which voltage applies to your circuit?",[11,295,296],{},"The most common mistake is confusing the network type with the circuit. The 400 V of a three-phase connection exists only between two line conductors. An ordinary socket or lighting circuit is connected between a line conductor and neutral even in such a home, and therefore sees 230 V.",[126,298,299,314],{},[129,300,301],{},[132,302,303,306,308,311],{},[135,304,305],{},"Supply network",[135,307,137],{},[135,309,310],{},"Nominal voltage",[135,312,313],{},"Factor",[151,315,316,330,342,354,366],{},[132,317,318,321,324,327],{},[156,319,320],{},"1×230 V",[156,322,323],{},"single-phase",[156,325,326],{},"230 V",[156,328,329],{},"2",[132,331,332,335,338,340],{},[156,333,334],{},"3×230 V without N",[156,336,337],{},"single-phase, L–L",[156,339,326],{},[156,341,329],{},[132,343,344,346,349,351],{},[156,345,334],{},[156,347,348],{},"three-phase",[156,350,326],{},[156,352,353],{},"√3",[132,355,356,359,362,364],{},[156,357,358],{},"3N~400\u002F230 V",[156,360,361],{},"single-phase, L–N",[156,363,326],{},[156,365,329],{},[132,367,368,370,372,375],{},[156,369,358],{},[156,371,348],{},[156,373,374],{},"400 V",[156,376,353],{},[11,378,379],{},"Because the factor and the reference voltage change together, the difference is large: the same 16 A over 30 m with 2.5 mm² gives 2.78% single-phase, but 1.38% as a three-phase circuit at 400 V. Calculating a single-phase circuit as three-phase produces a result roughly twice as favourable and leads to an undersized cable.",[11,381,382,383,59],{},"In a network without a neutral, a single-phase circuit runs between two line conductors. The voltage there is also 230 V, and because both conductors carry the full current, factor 2 applies. To identify your network type, see ",[55,384,386],{"href":385},"\u002Fen\u002Fblog\u002Fsingle-phase-vs-three-phase","Single-phase or three-phase in Belgium",[26,388,390],{"id":389},"two-worked-examples","Two worked examples",[392,393,395],"h3",{"id":394},"lighting-in-a-garden-room","Lighting in a garden room",[11,397,398],{},"A 45 m copper run supplies a lighting-only load of 8 A at 230 V. With 1.5 mm² and power factor 0.95:",[11,400,401],{},[67,402,403],{},"ΔU = 2 × 0.0175 × 45 × 8 × 0.95 \u002F 1.5 = 7.98 V",[11,405,406,407,410,411,414],{},"That is ",[14,408,409],{},"3.47%",", above the 3% for lighting. With 2.5 mm², the loss falls to ",[14,412,413],{},"4.79 V or 2.08%",". For this criterion, 2.5 mm² is the first standard size that fits.",[392,416,418],{"id":417},"garage-socket-circuit","Garage socket circuit",[11,420,421],{},"A 30 m copper run carries 16 A at 230 V. With 2.5 mm²:",[11,423,424],{},[67,425,426],{},"ΔU = 2 × 0.0175 × 30 × 16 × 0.95 \u002F 2.5 = 6.38 V",[11,428,406,429,432,433,59],{},[14,430,431],{},"2.78%",". Other final circuits use the 5% value, so 2.5 mm² passes the voltage-drop criterion. Whether the cable carries enough current in its actual installation method is a separate check, covered in ",[55,434,436],{"href":435},"\u002Fen\u002Fblog\u002Finstallation-methods-arei","Installation methods under AREI",[26,438,440],{"id":439},"calculate-online-for-free","Calculate online for free",[11,442,443,444,448],{},"The ",[55,445,447],{"href":446},"\u002Fen\u002Ftools\u002Fcable-sizing-calculator-belgium","voltage-drop and cable-sizing calculator"," checks a selected cross-section or finds a preliminary size, free and without sign-up. It covers the three Belgian network types (1×230 V, 3×230 V and 3N~400\u002F230 V), distinguishes single-phase from three-phase circuits, and takes loads in A, W, kW or kVA for copper or aluminium. The result compares standard sizes and reports voltage drop and protection separately.",[11,450,451,452,455],{},"The calculation runs directly in the browser, so sliders and result respond instantly; the same calculation core is also available through the PlanElec API. The calculator is built for ",[14,453,454],{},"preliminary design",". Installation method, grouping, ambient temperature, insulation type, reactance, short-circuit withstand, disconnection conditions, terminals and manufacturer data belong to the professional design that follows.",[26,457,459],{"id":458},"what-to-do-if-voltage-drop-is-too-high","What to do if voltage drop is too high",[11,461,462],{},"The most direct lever is a larger cross-section. Often a shorter route or a sub-board close to the loads is the better solution. Aluminium pays off on long feeders but needs suitable terminations and its own design checks. For an EV charger or heat pump, a three-phase supply sharply reduces current per phase at the same total power. Load management also keeps the service connection and protective device within their permitted range.",[26,464,466],{"id":465},"common-mistakes","Common mistakes",[76,468,469,475,481,487,493],{},[79,470,471,474],{},[14,472,473],{},"Applying 3% everywhere."," 3% applies to lighting, 5% to other final circuits.",[79,476,477,480],{},[14,478,479],{},"Checking only the breaker table."," It does not contain length or actual load.",[79,482,483,486],{},[14,484,485],{},"Entering the return distance too."," Enter the one-way length; factor 2 is already in the single-phase formula.",[79,488,489,492],{},[14,490,491],{},"Forgetting upstream segments."," The voltage drops of all segments add up.",[79,494,495,498],{},[14,496,497],{},"Treating voltage drop as the whole design."," Installation method and short-circuit behaviour are separate checks.",[26,500,502],{"id":501},"frequently-asked-questions","Frequently asked questions",[392,504,506],{"id":505},"do-i-enter-the-cable-length-one-way-or-there-and-back","Do I enter the cable length one way or there and back?",[11,508,509],{},"One way: the distance from the board to the load. In a single-phase circuit, factor 2 covers the return conductor; three-phase uses √3.",[392,511,513],{"id":512},"can-a-lighting-circuit-use-15-mm","Can a lighting circuit use 1.5 mm²?",[11,515,516],{},"Yes. Table 5.1 under subsection 5.2.1.2 permits 1.5 mm² for circuits without socket outlets, protected under Table 4.11 by at most a 16 A circuit breaker or a 10 A fuse. A long run can still require 2.5 mm² or more because of voltage drop.",[392,518,520],{"id":519},"is-a-larger-cross-section-always-better","Is a larger cross-section always better?",[11,522,523],{},"It reduces losses but costs more, takes up space and must fit the terminals. Choose the first size that passes every relevant check.",[392,525,527],{"id":526},"what-else-does-the-inspection-need","What else does the inspection need?",[11,529,530,531,535],{},"The calculator delivers a traceable voltage-drop calculation. An ",[55,532,534],{"href":533},"\u002Fen\u002Fblog\u002Felectrical-inspection","electrical inspection dossier"," also contains the single-line diagram, the situation plan and on-site measurements; the assessment is made by the accredited inspection body.",[26,537,539],{"id":538},"from-a-preliminary-result-to-a-verifiable-design-record","From a preliminary result to a verifiable design record",[11,541,542],{},"A good calculation sheet records more than the final percentage. Note the board and circuit, every cable segment, the one-way route length, conductor material, phase connection, nominal voltage, design current and the source of that current: nameplate, manufacturer design sheet or explicit planning scenario. An assumed power factor stays visibly marked as an assumption.",[11,544,545],{},"Next, record the acceptance criterion and its source. Because section 5.2.5 refers to the rules of good practice, a project value may come from the applicable standard, a specification, a network operator requirement or equipment limits. The 3% and 5% in this article are the usual starting point; a sensitive load can require a narrower voltage range at its terminals.",[11,547,548],{},"Then keep the checks separate. Voltage drop answers one question. The conductor must also carry the current in its actual installation method, be coordinated with overload and short-circuit protection, meet disconnection conditions and thermal withstand, and fit the terminals and cable routes mechanically. Several individually acceptable segments can still add up to too much drop. The main feeder, sub-board feeder and final circuit therefore belong in one balance.",[11,550,551],{},"After installation, compare the documented route and conductor with the work on site. Measurements reveal supply conditions or contact resistances that a resistance-only model does not predict. When the route, material or phase assignment changes, update the single-line diagram and cable list. Such a record convinces the electrician and the inspector far more than a screenshot with a green tick.",[392,553,555],{"id":554},"tracking-changes","Tracking changes",[11,557,558],{},"Keep inputs and results for each design version. If the cable length changes with the real route, the supply changes from single- to three-phase or the load changes to another appliance, recalculate and note the source. Compare percentage, end voltage and the cumulative segments. A larger conductor improves voltage drop but does not answer any open question on protection, terminals or installation.",[392,560,562],{"id":561},"stating-the-result-correctly","Stating the result correctly",[11,564,565],{},"Do not write \"cable is compliant\", but for example: \"For the documented load, length, nominal voltage and stated project criterion, the resistance model gives this voltage drop.\" Add the points that are still open. A designer can then repeat the calculation, change inputs and attach the remaining sizing evidence. Mark a scenario calculation for a load that is not yet known as such, and replace it once the actual appliance is chosen. Also note whether the length comes from the plan, a measurement or a conservative assumption.",[26,567,569],{"id":568},"checking-voltage-drop-in-your-project","Checking voltage drop in your project",[11,571,572,573,577,578,59],{},"In ",[55,574,576],{"href":575},"\u002Fen","PlanElec",", you draw cable routes on the floor plan and their length flows into the circuit. The self-check uses it to calculate voltage drop for every final circuit against the 3% and 5% guide values and flags exceedances alongside the cross-section-versus-protection check. The rule coverage is listed in ",[55,579,581],{"href":580},"\u002Fen\u002Fhelp\u002Fwhat-the-self-check-verifies","What the self-check verifies",[26,583,585],{"id":584},"related-articles","Related articles",[76,587,588,593,597,603,609,615,621],{},[79,589,590],{},[55,591,592],{"href":57},"Cable cross-section by circuit breaker",[79,594,595],{},[55,596,386],{"href":385},[79,598,599],{},[55,600,602],{"href":601},"\u002Fen\u002Fblog\u002Fev-charger-arei","Installing an EV charger under AREI\u002FRGIE",[79,604,605],{},[55,606,608],{"href":607},"\u002Fen\u002Fblog\u002Fdedicated-circuits-appliances","Dedicated circuits for appliances",[79,610,611],{},[55,612,614],{"href":613},"\u002Fen\u002Fblog\u002Fcable-routes-and-lengths","Determining cable routes and lengths on an electrical plan",[79,616,617],{},[55,618,620],{"href":619},"\u002Fen\u002Fblog\u002Fled-strip-power-supply-calculation","LED strip calculation: power supply, feed points and cable size",[79,622,623],{},[55,624,626],{"href":625},"\u002Fen\u002Fblog\u002Fheat-pump-single-line-diagram","Showing a heat pump on the single-line diagram",[11,628,629,630,636],{},"Official basis: ",[55,631,635],{"href":632,"rel":633},"https:\u002F\u002Feconomie.fgov.be\u002Ffr\u002Fpublications\u002Freglement-general-sur-les",[634],"nofollow","FPS Economy, AREI\u002FRGIE Book 1 V06",", in particular section 3.2.2 (types of systems), subsections 4.4.1.4 and 5.2.1.2 and section 5.2.5.",{"title":638,"searchDepth":639,"depth":639,"links":640},"",2,[641,642,643,644,645,646,651,652,653,654,660,664,665],{"id":28,"depth":639,"text":29},{"id":38,"depth":639,"text":39},{"id":62,"depth":639,"text":63},{"id":120,"depth":639,"text":121},{"id":292,"depth":639,"text":293},{"id":389,"depth":639,"text":390,"children":647},[648,650],{"id":394,"depth":649,"text":395},3,{"id":417,"depth":649,"text":418},{"id":439,"depth":639,"text":440},{"id":458,"depth":639,"text":459},{"id":465,"depth":639,"text":466},{"id":501,"depth":639,"text":502,"children":655},[656,657,658,659],{"id":505,"depth":649,"text":506},{"id":512,"depth":649,"text":513},{"id":519,"depth":649,"text":520},{"id":526,"depth":649,"text":527},{"id":538,"depth":639,"text":539,"children":661},[662,663],{"id":554,"depth":649,"text":555},{"id":561,"depth":649,"text":562},{"id":568,"depth":639,"text":569},{"id":584,"depth":639,"text":585},"guide","2026-08-02","Calculate the voltage drop of your cable and see at which length a larger cross-section is needed. Formula, length table and free calculator for Belgium.","md","2026-10-05","en",{},true,"\u002Fimages\u002Fblog\u002Feditorial-2026-10-13\u002Fshare\u002Fplanelec-voltage-drop-cable-sizing-editorial.jpg","\u002Fblog\u002Fvoltage-drop-cable-sizing.en","8 min",12,{"title":5,"description":668},null,"blog\u002Fvoltage-drop-cable-sizing.en",[682,683,684,685],"voltage-drop","cable-cross-section","calculator","arei","lJW0Q97F1XLd02G2CNcHnoXXlu0d0pKx8s-ZVX-mBrQ",[688,1317,1768,2389],{"id":689,"title":690,"articleId":6,"body":691,"category":666,"date":667,"description":1305,"extension":669,"image":24,"lastUpdated":670,"locale":1306,"meta":1307,"navigation":673,"ogImage":674,"path":1308,"publishDate":667,"readTime":676,"refreshInterval":677,"seo":1309,"seoTitle":679,"slug":1310,"stem":1311,"tags":1312,"__hash__":1316},"blog\u002Fblog\u002Fvoltage-drop-cable-sizing.de.md","Spannungsfall berechnen: Wie lang darf das Kabel sein?",{"type":8,"value":692,"toc":1279},[693,699,704,708,711,714,718,729,736,740,749,766,777,783,787,790,939,942,946,949,1023,1026,1033,1037,1041,1044,1049,1060,1064,1067,1072,1083,1087,1095,1102,1106,1109,1113,1145,1149,1153,1156,1160,1163,1167,1170,1174,1182,1186,1189,1192,1195,1198,1202,1205,1209,1212,1216,1226,1230,1270],[11,694,695,698],{},[14,696,697],{},"Wie lang ein Kabel sein darf, entscheidet der Spannungsfall: Ein 2,5-mm²-Kupferkabel mit 16 A bei 230 V erreicht die üblichen 5 % nach rund 54 m, ein 1,5-mm²-Lichtkreis mit 10 A die 3 % für Beleuchtung schon nach rund 31 m."," Darüber brauchst du einen größeren Querschnitt, eine kürzere Trasse oder eine Unterverteilung näher an der Last. Der Sicherungsautomat beantwortet diese Frage nicht: Er schützt die Leitung vor Überlast, sagt aber nichts darüber, wie viel Spannung am Verbraucher ankommt. Prüfe deshalb immer beides – passt die Leitung zur Absicherung, und bleibt der Spannungsfall im Zielbereich? Maßgeblich ist die strengere der beiden Anforderungen.",[11,700,701],{},[21,702],{"alt":703,"src":24},"Elektrofachkräfte ermitteln einen Leitungsweg vor Ort.",[26,705,707],{"id":706},"wann-wird-der-spannungsfall-wichtig","Wann wird der Spannungsfall wichtig?",[11,709,710],{},"Typische Fälle sind lange Leitungen zu Garage, Gartenhaus oder Nebengebäude, Außenbeleuchtung, Zuleitungen zu Unterverteilungen, Wärmepumpen und Ladepunkte. Neben der Entfernung zählen Strom, Ein- oder Dreiphasensystem, Leitermaterial, Querschnitt, Nennspannung und Leistungsfaktor.",[11,712,713],{},"Rechne immer den gesamten elektrischen Pfad ab der Verteilung. Besteht er aus mehreren Leitungsabschnitten, etwa Zuleitung zur Unterverteilung plus Endstromkreis, addieren sich die Spannungsfälle. Wer nur das letzte Stück zum Gerät rechnet, unterschätzt das Ergebnis.",[26,715,717],{"id":716},"was-das-arei-vorschreibt","Was das AREI vorschreibt",[11,719,720,721,724,725,728],{},"Abschnitt 5.2.5 des AREI Buch 1 heißt in der deutschen Fassung „Spannungsänderung“ und verlangt, den Spannungsfall auf die in den Regeln des Fachs beschriebenen Werte zu begrenzen. Eine feste Prozentzahl steht dort nicht. Die verbreiteten ",[14,722,723],{},"3 % für Beleuchtung"," und ",[14,726,727],{},"5 % für andere Endstromkreise"," stammen aus der Normenreihe IEC\u002FNBN HD 60364-5-52 und sind die übliche Auslegung dieser Regeln des Fachs.",[11,730,731,732,59],{},"Unterabschnitt 5.2.1.2 b verlangt zusätzlich, dass der Spannungsfall unter normalen Betriebsbedingungen mit dem sicheren Betrieb der versorgten Geräte vereinbar ist. Die zweite Prüfung, Querschnitt gegen Absicherung, regelt Tabelle 4.11 in Unterabschnitt 4.4.1.4 für Wohnanlagen. Sie begrenzt das Schutzorgan je Leiterquerschnitt, weist aber nicht die Strombelastbarkeit unter jeder Verlegebedingung nach. Die vollständige Tabelle mit den Spalten für Schmelzsicherung und Leitungsschutzschalter findest du im Artikel ",[55,733,735],{"href":734},"\u002Fde\u002Fblog\u002Fkabelquerschnitt-sicherungsautomat","Kabelquerschnitt je Sicherungsautomat",[26,737,739],{"id":738},"die-berechnungsformel","Die Berechnungsformel",[11,741,742,744,745,748],{},[67,743,69],{}," ist die ",[14,746,747],{},"einfache Leitungslänge",", nicht Hin- und Rückweg zusammen:",[76,750,751,756,761],{},[79,752,753,754],{},"einphasig: ",[67,755,84],{},[79,757,758,759],{},"dreiphasig: ",[67,760,90],{},[79,762,763,764],{},"prozentual: ",[67,765,96],{},[11,767,768,770,771,773,774,776],{},[67,769,101],{}," ist der spezifische Widerstand, ",[67,772,105],{}," der Strom und ",[67,775,109],{}," der Querschnitt in mm². PlanElec rechnet mit 0,0175 Ω·mm²\u002Fm für Kupfer und 0,029 Ω·mm²\u002Fm für Aluminium, standardmäßig mit cos φ 0,95 und mit der Nennspannung des Stromkreises: 230 V für einphasige Endstromkreise, für Drehstromkreise die Spannung zwischen den Außenleitern (230 V oder 400 V). Das Widerstandsmodell enthält weder Reaktanz noch Temperaturkorrektur und ist damit für Wohn- und Kleingewerbeanlagen eine solide Vorbemessung.",[11,778,779,780,782],{},"Umgestellt nach der Länge ergibt sich die größte zulässige einfache Länge für einen gewählten Grenzwert: ",[67,781,116],{}," für einphasige Kreise.",[26,784,786],{"id":785},"maximale-kabellänge-je-querschnitt","Maximale Kabellänge je Querschnitt",[11,788,789],{},"Die folgende Tabelle rechnet mit Kupfer, cos φ 0,95 und dem vollen Nennstrom des Automaten als Last. Liegt die tatsächliche Last darunter, darf die Leitung entsprechend länger sein.",[126,791,792,811],{},[129,793,794],{},[132,795,796,799,802,805,808],{},[135,797,798],{},"Stromkreis",[135,800,801],{},"Querschnitt",[135,803,804],{},"Strom",[135,806,807],{},"Grenzwert",[135,809,810],{},"Max. einfache Länge",[151,812,813,829,842,856,871,884,898,912,926],{},[132,814,815,818,821,823,826],{},[156,816,817],{},"Beleuchtung, 230 V",[156,819,820],{},"1,5 mm²",[156,822,164],{},[156,824,825],{},"3 %",[156,827,828],{},"ca. 31 m",[132,830,831,833,835,837,839],{},[156,832,817],{},[156,834,820],{},[156,836,179],{},[156,838,825],{},[156,840,841],{},"ca. 19 m",[132,843,844,846,849,851,853],{},[156,845,817],{},[156,847,848],{},"2,5 mm²",[156,850,179],{},[156,852,825],{},[156,854,855],{},"ca. 32 m",[132,857,858,861,863,865,868],{},[156,859,860],{},"Steckdosen\u002FGeräte, 230 V",[156,862,848],{},[156,864,179],{},[156,866,867],{},"5 %",[156,869,870],{},"ca. 54 m",[132,872,873,875,877,879,881],{},[156,874,860],{},[156,876,848],{},[156,878,222],{},[156,880,867],{},[156,882,883],{},"ca. 43 m",[132,885,886,889,891,893,895],{},[156,887,888],{},"Gerätestromkreis, 230 V",[156,890,235],{},[156,892,238],{},[156,894,867],{},[156,896,897],{},"ca. 55 m",[132,899,900,903,905,907,909],{},[156,901,902],{},"Kochfeld\u002FWallbox, 230 V",[156,904,251],{},[156,906,254],{},[156,908,867],{},[156,910,911],{},"ca. 65 m",[132,913,914,917,919,921,923],{},[156,915,916],{},"Drehstrom 3N~400\u002F230 V",[156,918,848],{},[156,920,179],{},[156,922,867],{},[156,924,925],{},"ca. 108 m",[132,927,928,930,932,934,936],{},[156,929,916],{},[156,931,251],{},[156,933,254],{},[156,935,867],{},[156,937,938],{},"ca. 130 m",[11,940,941],{},"Die Werte gelten für einen einzelnen Abschnitt ab Verteilung. Hängt der Endstromkreis an einer Unterverteilung, ziehe den Spannungsfall der Zuleitung vorher ab.",[26,943,945],{"id":944},"welche-spannung-gilt-für-deinen-stromkreis","Welche Spannung gilt für deinen Stromkreis?",[11,947,948],{},"Der häufigste Denkfehler beim Spannungsfall ist die Verwechslung von Netzform und Stromkreis. Die 400 V eines Drehstromanschlusses liegen nur zwischen zwei Außenleitern an. Ein gewöhnlicher Steckdosen- oder Beleuchtungskreis hängt auch in einem solchen Haus zwischen Außenleiter und Neutralleiter und sieht 230 V.",[126,950,951,966],{},[129,952,953],{},[132,954,955,958,960,963],{},[135,956,957],{},"Netz am Anschluss",[135,959,798],{},[135,961,962],{},"Nennspannung",[135,964,965],{},"Faktor",[151,967,968,979,991,1002,1013],{},[132,969,970,972,975,977],{},[156,971,320],{},[156,973,974],{},"einphasig",[156,976,326],{},[156,978,329],{},[132,980,981,984,987,989],{},[156,982,983],{},"3×230 V ohne N",[156,985,986],{},"einphasig, L–L",[156,988,326],{},[156,990,329],{},[132,992,993,995,998,1000],{},[156,994,983],{},[156,996,997],{},"dreiphasig",[156,999,326],{},[156,1001,353],{},[132,1003,1004,1006,1009,1011],{},[156,1005,358],{},[156,1007,1008],{},"einphasig, L–N",[156,1010,326],{},[156,1012,329],{},[132,1014,1015,1017,1019,1021],{},[156,1016,358],{},[156,1018,997],{},[156,1020,374],{},[156,1022,353],{},[11,1024,1025],{},"Weil sich Faktor und Bezugsspannung gemeinsam ändern, ist der Unterschied groß: Dieselben 16 A auf 30 m mit 2,5 mm² ergeben einphasig 2,78 %, als Drehstromkreis an 400 V dagegen 1,38 %. Wer einen einphasigen Kreis versehentlich dreiphasig rechnet, erhält ein etwa doppelt so günstiges Ergebnis und wählt den Querschnitt zu klein.",[11,1027,1028,1029,59],{},"Im Netz ohne Neutralleiter liegt ein einphasiger Kreis zwischen zwei Außenleitern. Auch dort sind es 230 V, und weil beide Leiter den vollen Strom führen, bleibt es beim Faktor 2. Welche Netzform bei dir anliegt, klärt der Beitrag ",[55,1030,1032],{"href":1031},"\u002Fde\u002Fblog\u002Feinphasig-dreiphasig-belgien","Einphasig oder dreiphasig in Belgien",[26,1034,1036],{"id":1035},"zwei-durchgerechnete-beispiele","Zwei durchgerechnete Beispiele",[392,1038,1040],{"id":1039},"beleuchtung-im-gartenhaus","Beleuchtung im Gartenhaus",[11,1042,1043],{},"Eine 45 m lange Kupferleitung versorgt bei 230 V eine reine Beleuchtungslast mit 8 A. Bei 1,5 mm² und cos φ 0,95 ergibt sich:",[11,1045,1046],{},[67,1047,1048],{},"ΔU = 2 × 0,0175 × 45 × 8 × 0,95 \u002F 1,5 = 7,98 V",[11,1050,1051,1052,1055,1056,1059],{},"Das sind ",[14,1053,1054],{},"3,47 %"," und damit mehr als die 3 % für Beleuchtung. Bei 2,5 mm² sinkt der Verlust auf ",[14,1057,1058],{},"4,79 V beziehungsweise 2,08 %",". Für dieses Kriterium ist 2,5 mm² die erste passende Standardgröße.",[392,1061,1063],{"id":1062},"steckdosenstromkreis-in-der-garage","Steckdosenstromkreis in der Garage",[11,1065,1066],{},"Eine 30 m lange Kupferleitung führt bei 230 V 16 A. Mit 2,5 mm² beträgt der Spannungsfall:",[11,1068,1069],{},[67,1070,1071],{},"ΔU = 2 × 0,0175 × 30 × 16 × 0,95 \u002F 2,5 = 6,38 V",[11,1073,1074,1075,1078,1079,59],{},"Das entspricht ",[14,1076,1077],{},"2,78 %",". Für einen anderen Endstromkreis gilt der 5-%-Wert, 2,5 mm² besteht also beim Spannungsfall. Ob die Leitung unter ihrer tatsächlichen Verlegeart ausreichend belastbar ist, prüfst du getrennt; das erklärt der Beitrag ",[55,1080,1082],{"href":1081},"\u002Fde\u002Fblog\u002Fverlegearten-arei-eindrahtschema","Verlegearten nach AREI",[26,1084,1086],{"id":1085},"kostenlos-online-berechnen","Kostenlos online berechnen",[11,1088,1089,1090,1094],{},"Der ",[55,1091,1093],{"href":1092},"\u002Fde\u002Ftools\u002Fkabelquerschnitt-rechner","Spannungsfall- und Kabelquerschnitt-Rechner"," prüft eine gewählte Größe oder ermittelt einen vorläufigen Querschnitt, kostenlos und ohne Anmeldung. Er deckt die drei belgischen Netzformen (1×230 V, 3×230 V und 3N~400\u002F230 V) ab, unterscheidet ein- und dreiphasige Stromkreise und nimmt die Last in A, W, kW oder kVA für Kupfer und Aluminium. Die Auswertung vergleicht Standardquerschnitte und weist Spannungsfall und Absicherung getrennt aus.",[11,1096,1097,1098,1101],{},"Die Berechnung läuft direkt im Browser, Regler und Ergebnis reagieren ohne Verzögerung; derselbe Rechenkern steht auch als PlanElec-API bereit. Der Rechner ist für die ",[14,1099,1100],{},"Vorbemessung"," gebaut. Verlegeart, Häufung, Umgebungstemperatur, Isolationsart, Reaktanz, Kurzschlussfestigkeit, Abschaltbedingungen, Klemmen und Herstellerangaben gehören in die anschließende fachliche Dimensionierung.",[26,1103,1105],{"id":1104},"was-tun-bei-zu-hohem-spannungsfall","Was tun bei zu hohem Spannungsfall?",[11,1107,1108],{},"Der direkteste Hebel ist ein größerer Querschnitt. Oft ist eine kürzere Trasse oder eine Unterverteilung nahe der Last die bessere Lösung. Aluminium lohnt sich bei langen Zuleitungen, braucht aber passende Anschlusstechnik und eine eigene Dimensionierung. Bei Wallbox oder Wärmepumpe senkt eine dreiphasige Versorgung bei gleicher Gesamtleistung den Strom je Phase deutlich. Lastmanagement hält zusätzlich Anschluss und Schutzorgan im zulässigen Bereich.",[26,1110,1112],{"id":1111},"häufige-fehler","Häufige Fehler",[76,1114,1115,1121,1127,1133,1139],{},[79,1116,1117,1120],{},[14,1118,1119],{},"Pauschal mit 3 % rechnen."," 3 % gelten für Beleuchtung, 5 % für andere Endstromkreise.",[79,1122,1123,1126],{},[14,1124,1125],{},"Nur die Automatentabelle prüfen."," Länge und tatsächliche Last stehen dort nicht.",[79,1128,1129,1132],{},[14,1130,1131],{},"Hin- und Rückweg eingeben."," Gefragt ist die einfache Strecke; der Faktor 2 steckt bereits in der Einphasenformel.",[79,1134,1135,1138],{},[14,1136,1137],{},"Vorgelagerte Abschnitte vergessen."," Die Spannungsfälle aller Teilstrecken summieren sich.",[79,1140,1141,1144],{},[14,1142,1143],{},"Den Spannungsfall für die ganze Dimensionierung halten."," Verlegeart und Kurzschlussverhalten sind eigene Prüfungen.",[26,1146,1148],{"id":1147},"häufig-gestellte-fragen","Häufig gestellte Fragen",[392,1150,1152],{"id":1151},"gebe-ich-die-kabellänge-einfach-oder-doppelt-ein","Gebe ich die Kabellänge einfach oder doppelt ein?",[11,1154,1155],{},"Einfach: die Entfernung von der Verteilung zum Verbraucher. Bei Einphasenwechselstrom bildet der Faktor 2 den Rückleiter ab, dreiphasig rechnest du mit √3.",[392,1157,1159],{"id":1158},"darf-ein-beleuchtungsstromkreis-15-mm-haben","Darf ein Beleuchtungsstromkreis 1,5 mm² haben?",[11,1161,1162],{},"Ja. Tabelle 5.1 zu Unterabschnitt 5.2.1.2 erlaubt 1,5 mm² für Stromkreise ohne Steckdosen, nach Tabelle 4.11 abgesichert mit höchstens 16 A Leitungsschutzschalter oder 10 A Schmelzsicherung. Bei langer Strecke kann der Spannungsfall trotzdem 2,5 mm² oder mehr verlangen.",[392,1164,1166],{"id":1165},"ist-ein-größerer-querschnitt-immer-besser","Ist ein größerer Querschnitt immer besser?",[11,1168,1169],{},"Er senkt Verluste, kostet aber mehr, braucht Platz und muss in die Klemmen passen. Wähle die erste Größe, die alle relevanten Prüfungen erfüllt.",[392,1171,1173],{"id":1172},"was-braucht-die-abnahme-zusätzlich","Was braucht die Abnahme zusätzlich?",[11,1175,1176,1177,1181],{},"Der Rechner liefert eine nachvollziehbare Spannungsfallrechnung. Zum ",[55,1178,1180],{"href":1179},"\u002Fde\u002Fblog\u002Felektrische-abnahme","Elektrodossier für die Abnahme"," gehören außerdem Eindrahtschema, Positionsplan und die Messungen vor Ort; die Beurteilung macht die zugelassene Kontrollstelle.",[26,1183,1185],{"id":1184},"aus-der-vorrechnung-einen-prüfbaren-auslegungsnachweis-machen","Aus der Vorrechnung einen prüfbaren Auslegungsnachweis machen",[11,1187,1188],{},"Ein gutes Rechenblatt dokumentiert mehr als den Endwert in Prozent. Halte Verteiler und Stromkreis fest, jedes Kabelsegment, die einfache Weglänge, Leitermaterial, Phasenanschluss, Nennspannung, Bemessungsstrom und die Herkunft dieses Stromwerts: Typenschild, Herstellerplanung oder ausdrücklich angenommenes Szenario. Auch ein angenommener Leistungsfaktor bleibt sichtbar als Annahme gekennzeichnet.",[11,1190,1191],{},"Danach folgt das Akzeptanzkriterium samt Quelle. Weil Abschnitt 5.2.5 auf die Regeln des Fachs verweist, kann ein Projektwert aus der anwendbaren Norm, einem Lastenheft, einer Vorgabe des Netzbetreibers oder den Gerätegrenzen stammen. Die 3 und 5 % aus diesem Artikel sind der übliche Ausgangspunkt; für empfindliche Verbraucher kann der zulässige Spannungsbereich am Gerät enger sein.",[11,1193,1194],{},"Trenne anschließend die Prüfungen. Der Spannungsfall beantwortet eine Frage. Der Leiter muss außerdem unter realer Verlegeart stromtragfähig sein, zu Überlast- und Kurzschlussschutz passen, Abschaltbedingungen und thermische Beanspruchung erfüllen und mechanisch in Klemmen und Kabelwege passen. Mehrere einzeln unauffällige Teilstrecken können zusammen zu viel Spannungsfall ergeben. Speiseleitung, Zuleitung der Unterverteilung und Endstromkreis gehören deshalb gemeinsam in die Bilanz.",[11,1196,1197],{},"Nach der Montage vergleichst du dokumentierten Weg und Leiter mit der Ausführung. Messungen zeigen Netzspannungsbedingungen oder Übergangswiderstände, die ein reines Widerstandsmodell nicht vorhersieht. Ändern sich Weg, Werkstoff oder Phasenzuordnung, aktualisierst du Eindrahtschema und Kabelliste. So ein Nachweis überzeugt Elektriker und Kontrollstelle mehr als ein Screenshot mit grünem Haken.",[392,1199,1201],{"id":1200},"änderungen-nachvollziehen","Änderungen nachvollziehen",[11,1203,1204],{},"Bewahre Eingabewerte und Ergebnis je Planungsstand auf. Ändert sich die Kabellänge durch den realen Weg, der Anschluss von ein- auf dreiphasig oder die Last durch ein anderes Gerät, rechnest du neu und notierst die Quelle. Vergleiche Prozentwert, Endspannung und die kumulierten Teilstrecken. Ein größerer Leiter verbessert den Spannungsfall, beantwortet aber keine offene Schutz-, Klemmen- oder Verlegefrage.",[392,1206,1208],{"id":1207},"ergebnis-richtig-formulieren","Ergebnis richtig formulieren",[11,1210,1211],{},"Schreib nicht „Kabel ist konform“, sondern zum Beispiel: „Für die dokumentierte Last, Länge, Nennspannung und das genannte Projektkriterium ergibt das Widerstandsmodell diesen Spannungsfall.“ Ergänze die Punkte, die noch offen sind. So kann ein Fachplaner das Ergebnis nachrechnen, Eingaben ändern und die übrigen Dimensionierungsnachweise anschließen. Eine Szenariorechnung für eine noch unbekannte Last kennzeichnest du als solche und ersetzt sie, sobald das reale Gerät feststeht. Notiere außerdem, ob die Länge aus dem Plan, einer Messung oder einer konservativen Annahme stammt.",[26,1213,1215],{"id":1214},"spannungsfall-direkt-im-projekt-prüfen","Spannungsfall direkt im Projekt prüfen",[11,1217,572,1218,1221,1222,59],{},[55,1219,576],{"href":1220},"\u002Fde"," zeichnest du Kabelwege im Grundriss; die Länge fließt in den Stromkreis ein. Die Selbstprüfung berechnet daraus für jeden Endstromkreis den Spannungsfall gegen die Richtwerte 3 % und 5 % und meldet Überschreitungen zusammen mit dem Querschnitt-Absicherungs-Abgleich. Welche Regeln sie abdeckt, steht in ",[55,1223,1225],{"href":1224},"\u002Fde\u002Fhelp\u002Fwas-die-selbstpruefung-kontrolliert","Was die Selbstprüfung kontrolliert",[26,1227,1229],{"id":1228},"verwandte-artikel","Verwandte Artikel",[76,1231,1232,1236,1240,1246,1252,1258,1264],{},[79,1233,1234],{},[55,1235,735],{"href":734},[79,1237,1238],{},[55,1239,1032],{"href":1031},[79,1241,1242],{},[55,1243,1245],{"href":1244},"\u002Fde\u002Fblog\u002Fwallbox-arei","Wallbox nach AREI installieren",[79,1247,1248],{},[55,1249,1251],{"href":1250},"\u002Fde\u002Fblog\u002Feigener-stromkreis-pflicht-geraete","Eigene Stromkreise für große Geräte",[79,1253,1254],{},[55,1255,1257],{"href":1256},"\u002Fde\u002Fblog\u002Fkabelwege-und-leitungslaengen-ermitteln","Kabelwege und Leitungslängen im Elektroplan ermitteln",[79,1259,1260],{},[55,1261,1263],{"href":1262},"\u002Fde\u002Fblog\u002Fled-streifen-netzteil-berechnen","LED-Streifen berechnen: Netzteil, Einspeisungen und Querschnitt",[79,1265,1266],{},[55,1267,1269],{"href":1268},"\u002Fde\u002Fblog\u002Fwaermepumpe-eindrahtschema","Eine Wärmepumpe im Eindrahtschema darstellen",[11,1271,1272,1273,1278],{},"Amtliche Grundlage: ",[55,1274,1277],{"href":1275,"rel":1276},"https:\u002F\u002Feconomie.fgov.be\u002Fde\u002Fpublication\u002Fallgemeine-vorschriften-fuer",[634],"FÖD Wirtschaft, AREI Buch 1 V06",", insbesondere Abschnitt 3.2.2 (Arten von Systemen), Unterabschnitte 4.4.1.4 und 5.2.1.2 sowie Abschnitt 5.2.5.",{"title":638,"searchDepth":639,"depth":639,"links":1280},[1281,1282,1283,1284,1285,1286,1290,1291,1292,1293,1299,1303,1304],{"id":706,"depth":639,"text":707},{"id":716,"depth":639,"text":717},{"id":738,"depth":639,"text":739},{"id":785,"depth":639,"text":786},{"id":944,"depth":639,"text":945},{"id":1035,"depth":639,"text":1036,"children":1287},[1288,1289],{"id":1039,"depth":649,"text":1040},{"id":1062,"depth":649,"text":1063},{"id":1085,"depth":639,"text":1086},{"id":1104,"depth":639,"text":1105},{"id":1111,"depth":639,"text":1112},{"id":1147,"depth":639,"text":1148,"children":1294},[1295,1296,1297,1298],{"id":1151,"depth":649,"text":1152},{"id":1158,"depth":649,"text":1159},{"id":1165,"depth":649,"text":1166},{"id":1172,"depth":649,"text":1173},{"id":1184,"depth":639,"text":1185,"children":1300},[1301,1302],{"id":1200,"depth":649,"text":1201},{"id":1207,"depth":649,"text":1208},{"id":1214,"depth":639,"text":1215},{"id":1228,"depth":639,"text":1229},"Berechne den Spannungsfall deines Kabels und sieh sofort, ab welcher Länge ein größerer Querschnitt nötig wird. Formel, Längentabelle und kostenloser Rechner für Belgien.","de",{},"\u002Fblog\u002Fvoltage-drop-cable-sizing.de",{"title":690,"description":1305},"spannungsfall-berechnen-kabelquerschnitt","blog\u002Fvoltage-drop-cable-sizing.de",[1313,1314,1315,685],"spannungsfall","kabelquerschnitt","rechner","R5UruH2bgq97cOA0FwfVRSD5pzAs4bueWzce9P1lnXs",{"id":4,"title":5,"articleId":6,"body":1318,"category":666,"date":667,"description":668,"extension":669,"image":24,"lastUpdated":670,"locale":671,"meta":1765,"navigation":673,"ogImage":674,"path":675,"publishDate":667,"readTime":676,"refreshInterval":677,"seo":1766,"seoTitle":679,"slug":6,"stem":680,"tags":1767,"__hash__":686},{"type":8,"value":1319,"toc":1739},[1320,1324,1328,1330,1332,1334,1336,1342,1346,1348,1354,1368,1376,1380,1382,1384,1510,1512,1514,1516,1582,1584,1588,1590,1592,1594,1598,1604,1606,1608,1612,1618,1620,1624,1628,1630,1632,1634,1656,1658,1660,1662,1664,1666,1668,1670,1672,1676,1678,1680,1682,1684,1686,1688,1690,1692,1694,1696,1702,1704,1734],[11,1321,1322,17],{},[14,1323,16],{},[11,1325,1326],{},[21,1327],{"alt":23,"src":24},[26,1329,29],{"id":28},[11,1331,32],{},[11,1333,35],{},[26,1335,39],{"id":38},[11,1337,42,1338,46,1340,50],{},[14,1339,45],{},[14,1341,49],{},[11,1343,53,1344,59],{},[55,1345,58],{"href":57},[26,1347,63],{"id":62},[11,1349,1350,70,1352,74],{},[67,1351,69],{},[14,1353,73],{},[76,1355,1356,1360,1364],{},[79,1357,81,1358],{},[67,1359,84],{},[79,1361,87,1362],{},[67,1363,90],{},[79,1365,93,1366],{},[67,1367,96],{},[11,1369,1370,102,1372,106,1374,110],{},[67,1371,101],{},[67,1373,105],{},[67,1375,109],{},[11,1377,113,1378,117],{},[67,1379,116],{},[26,1381,121],{"id":120},[11,1383,124],{},[126,1385,1386,1400],{},[129,1387,1388],{},[132,1389,1390,1392,1394,1396,1398],{},[135,1391,137],{},[135,1393,140],{},[135,1395,143],{},[135,1397,146],{},[135,1399,149],{},[151,1401,1402,1414,1426,1438,1450,1462,1474,1486,1498],{},[132,1403,1404,1406,1408,1410,1412],{},[156,1405,158],{},[156,1407,161],{},[156,1409,164],{},[156,1411,167],{},[156,1413,170],{},[132,1415,1416,1418,1420,1422,1424],{},[156,1417,158],{},[156,1419,161],{},[156,1421,179],{},[156,1423,167],{},[156,1425,184],{},[132,1427,1428,1430,1432,1434,1436],{},[156,1429,158],{},[156,1431,191],{},[156,1433,179],{},[156,1435,167],{},[156,1437,198],{},[132,1439,1440,1442,1444,1446,1448],{},[156,1441,203],{},[156,1443,191],{},[156,1445,179],{},[156,1447,210],{},[156,1449,213],{},[132,1451,1452,1454,1456,1458,1460],{},[156,1453,203],{},[156,1455,191],{},[156,1457,222],{},[156,1459,210],{},[156,1461,227],{},[132,1463,1464,1466,1468,1470,1472],{},[156,1465,232],{},[156,1467,235],{},[156,1469,238],{},[156,1471,210],{},[156,1473,243],{},[132,1475,1476,1478,1480,1482,1484],{},[156,1477,248],{},[156,1479,251],{},[156,1481,254],{},[156,1483,210],{},[156,1485,259],{},[132,1487,1488,1490,1492,1494,1496],{},[156,1489,264],{},[156,1491,191],{},[156,1493,179],{},[156,1495,210],{},[156,1497,273],{},[132,1499,1500,1502,1504,1506,1508],{},[156,1501,264],{},[156,1503,251],{},[156,1505,254],{},[156,1507,210],{},[156,1509,286],{},[11,1511,289],{},[26,1513,293],{"id":292},[11,1515,296],{},[126,1517,1518,1530],{},[129,1519,1520],{},[132,1521,1522,1524,1526,1528],{},[135,1523,305],{},[135,1525,137],{},[135,1527,310],{},[135,1529,313],{},[151,1531,1532,1542,1552,1562,1572],{},[132,1533,1534,1536,1538,1540],{},[156,1535,320],{},[156,1537,323],{},[156,1539,326],{},[156,1541,329],{},[132,1543,1544,1546,1548,1550],{},[156,1545,334],{},[156,1547,337],{},[156,1549,326],{},[156,1551,329],{},[132,1553,1554,1556,1558,1560],{},[156,1555,334],{},[156,1557,348],{},[156,1559,326],{},[156,1561,353],{},[132,1563,1564,1566,1568,1570],{},[156,1565,358],{},[156,1567,361],{},[156,1569,326],{},[156,1571,329],{},[132,1573,1574,1576,1578,1580],{},[156,1575,358],{},[156,1577,348],{},[156,1579,374],{},[156,1581,353],{},[11,1583,379],{},[11,1585,382,1586,59],{},[55,1587,386],{"href":385},[26,1589,390],{"id":389},[392,1591,395],{"id":394},[11,1593,398],{},[11,1595,1596],{},[67,1597,403],{},[11,1599,406,1600,410,1602,414],{},[14,1601,409],{},[14,1603,413],{},[392,1605,418],{"id":417},[11,1607,421],{},[11,1609,1610],{},[67,1611,426],{},[11,1613,406,1614,432,1616,59],{},[14,1615,431],{},[55,1617,436],{"href":435},[26,1619,440],{"id":439},[11,1621,443,1622,448],{},[55,1623,447],{"href":446},[11,1625,451,1626,455],{},[14,1627,454],{},[26,1629,459],{"id":458},[11,1631,462],{},[26,1633,466],{"id":465},[76,1635,1636,1640,1644,1648,1652],{},[79,1637,1638,474],{},[14,1639,473],{},[79,1641,1642,480],{},[14,1643,479],{},[79,1645,1646,486],{},[14,1647,485],{},[79,1649,1650,492],{},[14,1651,491],{},[79,1653,1654,498],{},[14,1655,497],{},[26,1657,502],{"id":501},[392,1659,506],{"id":505},[11,1661,509],{},[392,1663,513],{"id":512},[11,1665,516],{},[392,1667,520],{"id":519},[11,1669,523],{},[392,1671,527],{"id":526},[11,1673,530,1674,535],{},[55,1675,534],{"href":533},[26,1677,539],{"id":538},[11,1679,542],{},[11,1681,545],{},[11,1683,548],{},[11,1685,551],{},[392,1687,555],{"id":554},[11,1689,558],{},[392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la chute de tension : quelle longueur de câble ?",{"type":8,"value":1772,"toc":2350},[1773,1779,1784,1788,1791,1794,1798,1809,1816,1820,1829,1846,1857,1863,1867,1870,2014,2017,2021,2024,2098,2101,2108,2112,2116,2119,2123,2133,2137,2140,2144,2153,2157,2165,2172,2176,2179,2183,2215,2219,2223,2226,2230,2233,2237,2240,2244,2252,2256,2259,2262,2265,2268,2272,2275,2279,2282,2286,2297,2301,2342],[11,1774,1775,1778],{},[14,1776,1777],{},"La longueur admissible d’un câble dépend de la chute de tension : un câble cuivre de 2,5 mm² parcouru par 16 A sous 230 V atteint les 5 % usuels vers 54 m, un circuit d’éclairage en 1,5 mm² à 10 A atteint les 3 % de l’éclairage dès 31 m environ."," Au-delà, il vous faut une section supérieure, un tracé plus court ou un tableau secondaire plus proche de la charge. Le disjoncteur ne répond pas à cette question : il protège la canalisation contre la surcharge, mais ne dit rien de la tension disponible au récepteur. Vérifiez donc toujours les deux points : la canalisation est-elle compatible avec la protection, et la chute de tension reste-t-elle dans la valeur visée ? L’exigence la plus sévère fixe la section.",[11,1780,1781],{},[21,1782],{"alt":1783,"src":24},"Des électriciens relèvent un cheminement de câble sur place.",[26,1785,1787],{"id":1786},"dans-quels-cas-la-chute-de-tension-compte-t-elle","Dans quels cas la chute de tension compte-t-elle ?",[11,1789,1790],{},"Les cas typiques sont les longues liaisons vers un garage, un abri de jardin ou une annexe, l’éclairage extérieur, l’alimentation d’un tableau secondaire, une pompe à chaleur ou une borne de recharge. Outre la distance, interviennent le courant, le réseau mono- ou triphasé, le matériau du conducteur, la section, la tension nominale et le facteur de puissance.",[11,1792,1793],{},"Calculez toujours le trajet électrique complet depuis le tableau. Lorsque plusieurs tronçons se succèdent, par exemple l’alimentation d’un tableau secondaire puis le circuit terminal, leurs chutes s’additionnent. Ne calculer que les derniers mètres jusqu’à l’appareil sous-estime le résultat.",[26,1795,1797],{"id":1796},"ce-quimpose-le-rgie","Ce qu’impose le RGIE",[11,1799,1800,1801,1804,1805,1808],{},"La section 5.2.5 du Livre 1 du RGIE (« Chute de tension ») impose de limiter la chute de tension aux valeurs décrites dans les règles de l’art. Elle ne fixe aucun pourcentage. Les valeurs courantes de ",[14,1802,1803],{},"3 % pour l’éclairage"," et ",[14,1806,1807],{},"5 % pour les autres circuits terminaux"," viennent de la série de normes IEC\u002FNBN HD 60364-5-52 et constituent l’application usuelle de ces règles de l’art.",[11,1810,1811,1812,59],{},"La sous-section 5.2.1.2 b exige en outre que la chute de tension, dans les conditions normales de service, reste compatible avec un fonctionnement sûr des appareils alimentés. Le second contrôle, section contre protection, relève du tableau 4.11 de la sous-section 4.4.1.4 pour les installations domestiques. Il limite la protection selon la section, sans démontrer le courant admissible dans tous les modes de pose. Le tableau complet, avec les colonnes fusible et disjoncteur, figure dans ",[55,1813,1815],{"href":1814},"\u002Ffr\u002Fblog\u002Fsection-cable-disjoncteur","notre tableau section de câble et disjoncteur",[26,1817,1819],{"id":1818},"la-formule","La formule",[11,1821,1822,1824,1825,1828],{},[67,1823,69],{}," est la longueur ",[14,1826,1827],{},"aller simple",", pas l’aller-retour :",[76,1830,1831,1836,1841],{},[79,1832,1833,1834],{},"monophasé : ",[67,1835,84],{},[79,1837,1838,1839],{},"triphasé : ",[67,1840,90],{},[79,1842,1843,1844],{},"pourcentage : ",[67,1845,96],{},[11,1847,1848,1850,1851,1853,1854,1856],{},[67,1849,101],{}," est la résistivité, ",[67,1852,105],{}," le courant et ",[67,1855,109],{}," la section en mm². PlanElec calcule avec 0,0175 Ω·mm²\u002Fm pour le cuivre et 0,029 Ω·mm²\u002Fm pour l’aluminium, cos φ 0,95 par défaut et la tension nominale du circuit : 230 V pour les circuits terminaux monophasés et, pour les circuits triphasés, la tension entre conducteurs de phase (230 V ou 400 V). Le modèle résistif n’inclut ni réactance ni correction thermique ; pour le résidentiel et le petit tertiaire, c’est un prédimensionnement solide.",[11,1858,1859,1860,1862],{},"En isolant la longueur, on obtient la longueur simple maximale pour une limite donnée : ",[67,1861,116],{}," en monophasé.",[26,1864,1866],{"id":1865},"longueur-maximale-par-section","Longueur maximale par section",[11,1868,1869],{},"Le tableau suivant calcule en cuivre, avec cos φ 0,95 et le courant nominal complet du disjoncteur comme charge. Si la charge réelle est plus faible, la liaison peut être plus longue en proportion.",[126,1871,1872,1890],{},[129,1873,1874],{},[132,1875,1876,1878,1881,1884,1887],{},[135,1877,137],{},[135,1879,1880],{},"Section",[135,1882,1883],{},"Courant",[135,1885,1886],{},"Limite",[135,1888,1889],{},"Longueur simple max.",[151,1891,1892,1906,1919,1932,1946,1959,1973,1987,2001],{},[132,1893,1894,1897,1899,1901,1903],{},[156,1895,1896],{},"Éclairage, 230 V",[156,1898,820],{},[156,1900,164],{},[156,1902,825],{},[156,1904,1905],{},"env. 31 m",[132,1907,1908,1910,1912,1914,1916],{},[156,1909,1896],{},[156,1911,820],{},[156,1913,179],{},[156,1915,825],{},[156,1917,1918],{},"env. 19 m",[132,1920,1921,1923,1925,1927,1929],{},[156,1922,1896],{},[156,1924,848],{},[156,1926,179],{},[156,1928,825],{},[156,1930,1931],{},"env. 32 m",[132,1933,1934,1937,1939,1941,1943],{},[156,1935,1936],{},"Prises\u002Fappareils, 230 V",[156,1938,848],{},[156,1940,179],{},[156,1942,867],{},[156,1944,1945],{},"env. 54 m",[132,1947,1948,1950,1952,1954,1956],{},[156,1949,1936],{},[156,1951,848],{},[156,1953,222],{},[156,1955,867],{},[156,1957,1958],{},"env. 43 m",[132,1960,1961,1964,1966,1968,1970],{},[156,1962,1963],{},"Circuit d’appareil, 230 V",[156,1965,235],{},[156,1967,238],{},[156,1969,867],{},[156,1971,1972],{},"env. 55 m",[132,1974,1975,1978,1980,1982,1984],{},[156,1976,1977],{},"Taque\u002Fborne, 230 V",[156,1979,251],{},[156,1981,254],{},[156,1983,867],{},[156,1985,1986],{},"env. 65 m",[132,1988,1989,1992,1994,1996,1998],{},[156,1990,1991],{},"Triphasé 3N~400\u002F230 V",[156,1993,848],{},[156,1995,179],{},[156,1997,867],{},[156,1999,2000],{},"env. 108 m",[132,2002,2003,2005,2007,2009,2011],{},[156,2004,1991],{},[156,2006,251],{},[156,2008,254],{},[156,2010,867],{},[156,2012,2013],{},"env. 130 m",[11,2015,2016],{},"Ces valeurs valent pour un seul tronçon depuis le tableau. Si le circuit terminal part d’un tableau secondaire, déduisez d’abord la chute de tension de son alimentation.",[26,2018,2020],{"id":2019},"quelle-tension-sapplique-à-votre-circuit","Quelle tension s’applique à votre circuit ?",[11,2022,2023],{},"L’erreur la plus fréquente consiste à confondre la forme du réseau et le circuit. Les 400 V d’un raccordement triphasé n’existent qu’entre deux conducteurs de phase. Un circuit de prises ou d’éclairage ordinaire se raccorde, même dans une telle habitation, entre une phase et le neutre : il voit 230 V.",[126,2025,2026,2041],{},[129,2027,2028],{},[132,2029,2030,2033,2035,2038],{},[135,2031,2032],{},"Réseau au raccordement",[135,2034,137],{},[135,2036,2037],{},"Tension nominale",[135,2039,2040],{},"Facteur",[151,2042,2043,2054,2066,2077,2088],{},[132,2044,2045,2047,2050,2052],{},[156,2046,320],{},[156,2048,2049],{},"monophasé",[156,2051,326],{},[156,2053,329],{},[132,2055,2056,2059,2062,2064],{},[156,2057,2058],{},"3×230 V sans neutre",[156,2060,2061],{},"monophasé, L–L",[156,2063,326],{},[156,2065,329],{},[132,2067,2068,2070,2073,2075],{},[156,2069,2058],{},[156,2071,2072],{},"triphasé",[156,2074,326],{},[156,2076,353],{},[132,2078,2079,2081,2084,2086],{},[156,2080,358],{},[156,2082,2083],{},"monophasé, L–N",[156,2085,326],{},[156,2087,329],{},[132,2089,2090,2092,2094,2096],{},[156,2091,358],{},[156,2093,2072],{},[156,2095,374],{},[156,2097,353],{},[11,2099,2100],{},"Comme le facteur et la tension de référence changent ensemble, l’écart est important : les mêmes 16 A sur 30 m en 2,5 mm² donnent 2,78 % en monophasé, mais 1,38 % pour un circuit triphasé sous 400 V. Calculer par erreur un circuit monophasé en triphasé donne un résultat environ deux fois trop favorable et conduit à sous-dimensionner la section.",[11,2102,2103,2104,59],{},"Dans un réseau sans neutre, un circuit monophasé est raccordé entre deux conducteurs de phase. La tension vaut aussi 230 V et, comme les deux conducteurs portent le courant complet, le facteur 2 s’applique. Pour identifier votre réseau, consultez ",[55,2105,2107],{"href":2106},"\u002Ffr\u002Fblog\u002Fmonophase-triphase-belgique","Monophasé ou triphasé en Belgique",[26,2109,2111],{"id":2110},"deux-exemples-chiffrés","Deux exemples chiffrés",[392,2113,2115],{"id":2114},"éclairage-dun-abri-de-jardin","Éclairage d’un abri de jardin",[11,2117,2118],{},"Une liaison cuivre de 45 m alimente sous 230 V une charge d’éclairage de 8 A. En 1,5 mm² avec cos φ 0,95 :",[11,2120,2121],{},[67,2122,1048],{},[11,2124,2125,2126,2128,2129,2132],{},"Soit ",[14,2127,1054],{},", donc plus que les 3 % de l’éclairage. En 2,5 mm², la perte tombe à ",[14,2130,2131],{},"4,79 V, soit 2,08 %",". Pour ce critère, 2,5 mm² est la première section normalisée qui convient.",[392,2134,2136],{"id":2135},"circuit-de-prises-dans-un-garage","Circuit de prises dans un garage",[11,2138,2139],{},"Une liaison cuivre de 30 m transporte 16 A sous 230 V. En 2,5 mm² :",[11,2141,2142],{},[67,2143,1071],{},[11,2145,2125,2146,2148,2149,59],{},[14,2147,1077],{},". Pour un autre circuit terminal, la limite est de 5 % : 2,5 mm² satisfait le critère de chute de tension. Le courant admissible dans le mode de pose réel se vérifie séparément ; c’est l’objet de ",[55,2150,2152],{"href":2151},"\u002Ffr\u002Fblog\u002Fmodes-de-pose-rgie","Modes de pose selon le RGIE",[26,2154,2156],{"id":2155},"calculer-gratuitement-en-ligne","Calculer gratuitement en ligne",[11,2158,2159,2160,2164],{},"Le ",[55,2161,2163],{"href":2162},"\u002Ffr\u002Ftools\u002Fcalcul-section-cable","calculateur de chute de tension et de section"," contrôle une section choisie ou propose une section provisoire, gratuitement et sans inscription. Il couvre les trois réseaux belges (1×230 V, 3×230 V et 3N~400\u002F230 V), distingue circuits monophasés et triphasés et accepte la charge en A, W, kW ou kVA, en cuivre ou en aluminium. Il compare les sections normalisées et affiche séparément chute de tension et protection.",[11,2166,2167,2168,2171],{},"Le calcul tourne directement dans le navigateur : curseurs et résultat réagissent sans délai ; le même moteur de calcul est disponible via l’API PlanElec. Le calculateur est conçu pour le ",[14,2169,2170],{},"prédimensionnement",". Mode de pose, groupement, température ambiante, type d’isolant, réactance, tenue au court-circuit, conditions de coupure, bornes et données fabricant relèvent ensuite du dimensionnement professionnel.",[26,2173,2175],{"id":2174},"que-faire-si-la-chute-est-trop-élevée","Que faire si la chute est trop élevée ?",[11,2177,2178],{},"Le levier le plus direct est une section supérieure. Souvent, un tracé plus court ou un tableau secondaire proche des charges est la meilleure solution. L’aluminium est intéressant sur une longue alimentation, avec des connexions adaptées et un dimensionnement propre. Pour une borne ou une pompe à chaleur, une alimentation triphasée réduit fortement le courant par phase à puissance totale égale. La gestion de charge maintient en outre le raccordement et la protection dans leur plage admissible.",[26,2180,2182],{"id":2181},"erreurs-fréquentes","Erreurs fréquentes",[76,2184,2185,2191,2197,2203,2209],{},[79,2186,2187,2190],{},[14,2188,2189],{},"Appliquer 3 % partout."," 3 % valent pour l’éclairage, 5 % pour les autres circuits terminaux.",[79,2192,2193,2196],{},[14,2194,2195],{},"S’arrêter au tableau section-disjoncteur."," Il ignore la longueur et la charge réelle.",[79,2198,2199,2202],{},[14,2200,2201],{},"Encoder l’aller-retour."," Saisissez la distance simple ; le facteur 2 est déjà dans la formule monophasée.",[79,2204,2205,2208],{},[14,2206,2207],{},"Oublier les tronçons en amont."," Les chutes de tous les tronçons s’additionnent.",[79,2210,2211,2214],{},[14,2212,2213],{},"Prendre la chute de tension pour tout le dimensionnement."," Mode de pose et tenue au court-circuit sont des vérifications distinctes.",[26,2216,2218],{"id":2217},"questions-fréquentes","Questions fréquentes",[392,2220,2222],{"id":2221},"faut-il-saisir-la-longueur-simple-ou-laller-retour","Faut-il saisir la longueur simple ou l’aller-retour ?",[11,2224,2225],{},"La longueur simple, du tableau au récepteur. En monophasé, le facteur 2 couvre le conducteur de retour ; en triphasé, vous calculez avec √3.",[392,2227,2229],{"id":2228},"le-15-mm-est-il-admis-pour-léclairage","Le 1,5 mm² est-il admis pour l’éclairage ?",[11,2231,2232],{},"Oui. Le tableau 5.1 de la sous-section 5.2.1.2 admet 1,5 mm² pour les circuits sans prises, protégés selon le tableau 4.11 par un disjoncteur de 16 A ou un fusible de 10 A au plus. Une grande longueur peut néanmoins exiger 2,5 mm² ou davantage.",[392,2234,2236],{"id":2235},"une-section-plus-grande-est-elle-toujours-préférable","Une section plus grande est-elle toujours préférable ?",[11,2238,2239],{},"Elle réduit les pertes, mais coûte plus, prend de la place et doit entrer dans les bornes. Choisissez la première section qui réussit toutes les vérifications pertinentes.",[392,2241,2243],{"id":2242},"que-faut-il-en-plus-pour-le-contrôle-électrique","Que faut-il en plus pour le contrôle électrique ?",[11,2245,2246,2247,2251],{},"Le calculateur fournit un calcul de chute de tension traçable. Le ",[55,2248,2250],{"href":2249},"\u002Ffr\u002Fblog\u002Fcontrole-electrique","dossier du contrôle électrique"," comprend en outre le schéma unifilaire, le plan de position et les mesures sur place ; l’évaluation revient à l’organisme agréé.",[26,2253,2255],{"id":2254},"du-pré-calcul-à-une-note-de-dimensionnement-vérifiable","Du pré-calcul à une note de dimensionnement vérifiable",[11,2257,2258],{},"Une bonne feuille de calcul conserve plus que le pourcentage final. Notez le tableau et le circuit, chaque tronçon, la longueur aller simple, le matériau, le raccordement des phases, la tension nominale, le courant de calcul et l’origine de ce courant : plaque signalétique, étude fabricant ou scénario explicitement posé. Un facteur de puissance supposé reste visible comme hypothèse.",[11,2260,2261],{},"Consignez ensuite le critère d’acceptation et sa source. Puisque la section 5.2.5 renvoie aux règles de l’art, la valeur de projet peut venir de la norme applicable, d’un cahier des charges, d’une exigence du gestionnaire de réseau ou des limites de l’appareil. Les 3 et 5 % de cet article sont le point de départ usuel ; un récepteur sensible peut exiger une plage de tension plus étroite à ses bornes.",[11,2263,2264],{},"Séparez ensuite les vérifications. La chute de tension répond à une question. Le conducteur doit aussi supporter le courant dans son mode de pose réel, être coordonné avec la protection contre surcharge et court-circuit, respecter les conditions de coupure et la tenue thermique, et convenir mécaniquement aux bornes et aux cheminements. Plusieurs tronçons acceptables isolément peuvent donner ensemble une chute excessive. Alimentation principale, départ vers le tableau secondaire et circuit terminal entrent donc ensemble dans le bilan.",[11,2266,2267],{},"Après exécution, confrontez le trajet et le conducteur documentés au chantier. Les mesures révèlent des conditions de réseau ou des résistances de contact qu’un modèle purement résistif ne prévoit pas. Si le tracé, le matériau ou la phase change, mettez à jour le schéma unifilaire et la liste des câbles. Une telle note convainc l’électricien et l’organisme de contrôle bien plus qu’une capture affichant une coche verte.",[392,2269,2271],{"id":2270},"suivre-les-modifications","Suivre les modifications",[11,2273,2274],{},"Conservez les données et le résultat pour chaque version du projet. Si la longueur change avec le tracé réel, le raccordement passe du mono au triphasé ou la charge change d’appareil, recalculez et notez la source. Comparez pourcentage, tension finale et tronçons cumulés. Un conducteur plus gros améliore la chute de tension, mais ne règle aucune question ouverte de protection, de bornes ou de pose.",[392,2276,2278],{"id":2277},"formuler-correctement-le-résultat","Formuler correctement le résultat",[11,2280,2281],{},"N’écrivez pas « câble conforme », mais par exemple : « Pour la charge, la longueur, la tension nominale et le critère de projet documentés, le modèle résistif donne cette chute de tension. » Mentionnez les points encore ouverts. Un concepteur peut ainsi refaire le calcul, modifier les entrées et y rattacher les autres justificatifs de dimensionnement. Un calcul de scénario pour une charge encore inconnue est signalé comme tel et remplacé dès que l’appareil réel est choisi. Indiquez aussi si la longueur vient du plan, d’une mesure ou d’une hypothèse prudente.",[26,2283,2285],{"id":2284},"vérifier-la-chute-de-tension-dans-votre-projet","Vérifier la chute de tension dans votre projet",[11,2287,2288,2289,2292,2293,59],{},"Dans ",[55,2290,576],{"href":2291},"\u002Ffr",", vous tracez les cheminements de câbles sur le plan ; leur longueur est reprise dans le circuit. L’autocontrôle en déduit pour chaque circuit terminal la chute de tension par rapport aux valeurs guides de 3 % et 5 % et signale les dépassements, en plus du contrôle section-protection. Les règles couvertes sont détaillées dans ",[55,2294,2296],{"href":2295},"\u002Ffr\u002Fhelp\u002Fce-que-verifie-l-autocontrole","Ce que vérifie l’autocontrôle",[26,2298,2300],{"id":2299},"articles-associés","Articles associés",[76,2302,2303,2308,2312,2318,2324,2330,2336],{},[79,2304,2305],{},[55,2306,2307],{"href":1814},"Section de câble selon le disjoncteur",[79,2309,2310],{},[55,2311,2107],{"href":2106},[79,2313,2314],{},[55,2315,2317],{"href":2316},"\u002Ffr\u002Fblog\u002Fborne-recharge-rgie","Installer une borne de recharge selon le RGIE",[79,2319,2320],{},[55,2321,2323],{"href":2322},"\u002Ffr\u002Fblog\u002Fcircuit-dedie-obligatoire-appareils","Circuits dédiés pour les appareils",[79,2325,2326],{},[55,2327,2329],{"href":2328},"\u002Ffr\u002Fblog\u002Fcheminements-et-longueurs-de-cables","Déterminer cheminements et longueurs de câbles sur un plan électrique",[79,2331,2332],{},[55,2333,2335],{"href":2334},"\u002Ffr\u002Fblog\u002Fruban-led-alimentation-calcul","Calculer un ruban LED : alimentation, points d’alimentation et section",[79,2337,2338],{},[55,2339,2341],{"href":2340},"\u002Ffr\u002Fblog\u002Fpompe-chaleur-schema-unifilaire","Représenter une pompe à chaleur sur le schéma unifilaire",[11,2343,2344,2345,2349],{},"Base officielle : ",[55,2346,2348],{"href":632,"rel":2347},[634],"SPF Économie, Livre 1 V06 du RGIE",", en particulier la section 3.2.2 (types de systèmes), les sous-sections 4.4.1.4 et 5.2.1.2 et la section 5.2.5.",{"title":638,"searchDepth":639,"depth":639,"links":2351},[2352,2353,2354,2355,2356,2357,2361,2362,2363,2364,2370,2374,2375],{"id":1786,"depth":639,"text":1787},{"id":1796,"depth":639,"text":1797},{"id":1818,"depth":639,"text":1819},{"id":1865,"depth":639,"text":1866},{"id":2019,"depth":639,"text":2020},{"id":2110,"depth":639,"text":2111,"children":2358},[2359,2360],{"id":2114,"depth":649,"text":2115},{"id":2135,"depth":649,"text":2136},{"id":2155,"depth":639,"text":2156},{"id":2174,"depth":639,"text":2175},{"id":2181,"depth":639,"text":2182},{"id":2217,"depth":639,"text":2218,"children":2365},[2366,2367,2368,2369],{"id":2221,"depth":649,"text":2222},{"id":2228,"depth":649,"text":2229},{"id":2235,"depth":649,"text":2236},{"id":2242,"depth":649,"text":2243},{"id":2254,"depth":639,"text":2255,"children":2371},[2372,2373],{"id":2270,"depth":649,"text":2271},{"id":2277,"depth":649,"text":2278},{"id":2284,"depth":639,"text":2285},{"id":2299,"depth":639,"text":2300},"Calculez la chute de tension de votre câble et voyez dès quelle longueur une section plus grande s'impose. Formule, tableau des longueurs et calculateur gratuit pour la Belgique.","fr",{},"\u002Fblog\u002Fvoltage-drop-cable-sizing.fr",{"title":1770,"description":2376},"chute-de-tension-section-cable","blog\u002Fvoltage-drop-cable-sizing.fr",[2384,2385,2386,2387],"chute-de-tension","section-cable","calculateur","rgie","A3eALuXK7PmRt2Saeg6JgA4oSkrkuyZkYbjeQObVVy0",{"id":2390,"title":2391,"articleId":6,"body":2392,"category":666,"date":667,"description":2989,"extension":669,"image":24,"lastUpdated":670,"locale":2990,"meta":2991,"navigation":673,"ogImage":674,"path":2992,"publishDate":667,"readTime":676,"refreshInterval":677,"seo":2993,"seoTitle":679,"slug":2994,"stem":2995,"tags":2996,"__hash__":3000},"blog\u002Fblog\u002Fvoltage-drop-cable-sizing.nl.md","Spanningsval berekenen: hoe lang mag je kabel zijn?",{"type":8,"value":2393,"toc":2963},[2394,2400,2405,2409,2412,2415,2419,2430,2437,2441,2450,2466,2477,2483,2487,2490,2626,2629,2633,2636,2709,2712,2719,2723,2727,2730,2734,2745,2749,2752,2756,2766,2770,2778,2785,2789,2792,2796,2828,2832,2836,2839,2843,2846,2850,2853,2857,2865,2869,2872,2875,2878,2881,2885,2888,2892,2895,2899,2909,2913,2954],[11,2395,2396,2399],{},[14,2397,2398],{},"Hoe lang je kabel mag zijn, bepaalt de spanningsval: een koperkabel van 2,5 mm² met 16 A op 230 V bereikt de gebruikelijke 5% na ongeveer 54 m, een verlichtingskring in 1,5 mm² met 10 A de 3% voor verlichting al na ongeveer 31 m."," Daarboven heb je een grotere doorsnede, een kortere route of een onderverdeler dichter bij de belasting nodig. De automaat beantwoordt die vraag niet: hij beschermt de leiding tegen overbelasting, maar zegt niets over de spanning die aan het toestel aankomt. Controleer dus altijd allebei: past de leiding bij de beveiliging, en blijft de spanningsval binnen de streefwaarde? De strengste van de twee eisen bepaalt de doorsnede.",[11,2401,2402],{},[21,2403],{"alt":2404,"src":24},"Elektriciens bepalen een kabeltracé ter plaatse.",[26,2406,2408],{"id":2407},"wanneer-speelt-spanningsval-een-rol","Wanneer speelt spanningsval een rol?",[11,2410,2411],{},"Typische gevallen zijn lange leidingen naar garage, tuinhuis of bijgebouw, buitenverlichting, voedingen van onderverdelers, warmtepompen en laadpunten. Naast de afstand tellen stroom, een- of driefasig systeem, geleidermateriaal, doorsnede, nominale spanning en arbeidsfactor mee.",[11,2413,2414],{},"Reken altijd het volledige elektrische pad vanaf de verdeler. Bestaat het uit meerdere leidingdelen, bijvoorbeeld de voeding van een onderverdeler plus de eindkring, dan tellen de spanningsvallen op. Wie alleen het laatste stuk naar het toestel rekent, onderschat het resultaat.",[26,2416,2418],{"id":2417},"wat-het-arei-voorschrijft","Wat het AREI voorschrijft",[11,2420,2421,2422,2425,2426,2429],{},"Afdeling 5.2.5 van AREI Boek 1 („Spanningsval”) bepaalt dat de spanningsval beperkt moet blijven tot de waarden die in de regels van goed vakmanschap beschreven zijn. Een vast percentage staat er niet in. De gangbare ",[14,2423,2424],{},"3% voor verlichting"," en ",[14,2427,2428],{},"5% voor andere eindkringen"," komen uit de normenreeks IEC\u002FNBN HD 60364-5-52 en zijn de gebruikelijke invulling van die regels van goed vakmanschap.",[11,2431,2432,2433,59],{},"Onderafdeling 5.2.1.2 b vraagt daarnaast dat de spanningsval onder normale bedrijfsvoorwaarden verenigbaar is met de bedrijfszekere werking van de gevoede toestellen. De tweede controle, doorsnede tegenover beveiliging, regelt Tabel 4.11 in onderafdeling 4.4.1.4 voor huishoudelijke installaties. Ze begrenst de beveiliging per geleiderdoorsnede, maar bewijst niet de stroombelastbaarheid bij elke plaatsingswijze. De volledige tabel met de kolommen voor smeltzekering en automaat vind je in ",[55,2434,2436],{"href":2435},"\u002Fblog\u002Fkabeldoorsnede-automaat","welke kabeldoorsnede bij welke automaat hoort",[26,2438,2440],{"id":2439},"de-formule","De formule",[11,2442,2443,2445,2446,2449],{},[67,2444,69],{}," is de ",[14,2447,2448],{},"enkele leidinglengte",", niet heen en terug samen:",[76,2451,2452,2457,2462],{},[79,2453,2454,2455],{},"eenfasig: ",[67,2456,84],{},[79,2458,2459,2460],{},"driefasig: ",[67,2461,90],{},[79,2463,93,2464],{},[67,2465,96],{},[11,2467,2468,2470,2471,2473,2474,2476],{},[67,2469,101],{}," is de soortelijke weerstand, ",[67,2472,105],{}," de stroom en ",[67,2475,109],{}," de doorsnede in mm². PlanElec rekent met 0,0175 Ω·mm²\u002Fm voor koper en 0,029 Ω·mm²\u002Fm voor aluminium, standaard met cos φ 0,95 en met de nominale spanning van de kring: 230 V voor eenfasige eindkringen, voor driefasige kringen de spanning tussen de fasegeleiders (230 V of 400 V). Het weerstandsmodel houdt geen rekening met reactantie of temperatuurcorrectie en is daarmee een degelijke voorstudie voor woningen en kleine bedrijfsinstallaties.",[11,2478,2479,2480,2482],{},"Herschreven naar de lengte krijg je de grootste toegelaten enkele lengte voor een gekozen grenswaarde: ",[67,2481,116],{}," voor eenfasige kringen.",[26,2484,2486],{"id":2485},"maximale-kabellengte-per-doorsnede","Maximale kabellengte per doorsnede",[11,2488,2489],{},"De tabel rekent met koper, cos φ 0,95 en de volle nominale stroom van de automaat als belasting. Is de werkelijke belasting lager, dan mag de leiding navenant langer zijn.",[126,2491,2492,2511],{},[129,2493,2494],{},[132,2495,2496,2499,2502,2505,2508],{},[135,2497,2498],{},"Stroomkring",[135,2500,2501],{},"Doorsnede",[135,2503,2504],{},"Stroom",[135,2506,2507],{},"Grenswaarde",[135,2509,2510],{},"Max. enkele lengte",[151,2512,2513,2526,2538,2550,2563,2575,2588,2601,2614],{},[132,2514,2515,2518,2520,2522,2524],{},[156,2516,2517],{},"Verlichting, 230 V",[156,2519,820],{},[156,2521,164],{},[156,2523,167],{},[156,2525,828],{},[132,2527,2528,2530,2532,2534,2536],{},[156,2529,2517],{},[156,2531,820],{},[156,2533,179],{},[156,2535,167],{},[156,2537,841],{},[132,2539,2540,2542,2544,2546,2548],{},[156,2541,2517],{},[156,2543,848],{},[156,2545,179],{},[156,2547,167],{},[156,2549,855],{},[132,2551,2552,2555,2557,2559,2561],{},[156,2553,2554],{},"Stopcontacten\u002Ftoestellen, 230 V",[156,2556,848],{},[156,2558,179],{},[156,2560,210],{},[156,2562,870],{},[132,2564,2565,2567,2569,2571,2573],{},[156,2566,2554],{},[156,2568,848],{},[156,2570,222],{},[156,2572,210],{},[156,2574,883],{},[132,2576,2577,2580,2582,2584,2586],{},[156,2578,2579],{},"Toestelkring, 230 V",[156,2581,235],{},[156,2583,238],{},[156,2585,210],{},[156,2587,897],{},[132,2589,2590,2593,2595,2597,2599],{},[156,2591,2592],{},"Kookplaat\u002Flaadpunt, 230 V",[156,2594,251],{},[156,2596,254],{},[156,2598,210],{},[156,2600,911],{},[132,2602,2603,2606,2608,2610,2612],{},[156,2604,2605],{},"Driefasig 3N~400\u002F230 V",[156,2607,848],{},[156,2609,179],{},[156,2611,210],{},[156,2613,925],{},[132,2615,2616,2618,2620,2622,2624],{},[156,2617,2605],{},[156,2619,251],{},[156,2621,254],{},[156,2623,210],{},[156,2625,938],{},[11,2627,2628],{},"De waarden gelden voor één leidingdeel vanaf de verdeler. Hangt de eindkring aan een onderverdeler, trek dan eerst de spanningsval van de voeding af.",[26,2630,2632],{"id":2631},"welke-spanning-geldt-voor-jouw-stroomkring","Welke spanning geldt voor jouw stroomkring?",[11,2634,2635],{},"De meest gemaakte denkfout bij spanningsval is het verwarren van netvorm en stroomkring. De 400 V van een driefasige aansluiting staat alleen tussen twee fasegeleiders. Een gewone stopcontact- of verlichtingskring hangt ook in zo'n woning tussen fasegeleider en nulgeleider en ziet 230 V.",[126,2637,2638,2652],{},[129,2639,2640],{},[132,2641,2642,2645,2647,2650],{},[135,2643,2644],{},"Net op de aansluiting",[135,2646,2498],{},[135,2648,2649],{},"Nominale spanning",[135,2651,313],{},[151,2653,2654,2665,2677,2688,2699],{},[132,2655,2656,2658,2661,2663],{},[156,2657,320],{},[156,2659,2660],{},"eenfasig",[156,2662,326],{},[156,2664,329],{},[132,2666,2667,2670,2673,2675],{},[156,2668,2669],{},"3×230 V zonder N",[156,2671,2672],{},"eenfasig, L–L",[156,2674,326],{},[156,2676,329],{},[132,2678,2679,2681,2684,2686],{},[156,2680,2669],{},[156,2682,2683],{},"driefasig",[156,2685,326],{},[156,2687,353],{},[132,2689,2690,2692,2695,2697],{},[156,2691,358],{},[156,2693,2694],{},"eenfasig, L–N",[156,2696,326],{},[156,2698,329],{},[132,2700,2701,2703,2705,2707],{},[156,2702,358],{},[156,2704,2683],{},[156,2706,374],{},[156,2708,353],{},[11,2710,2711],{},"Omdat factor en referentiespanning samen veranderen, is het verschil groot: dezelfde 16 A over 30 m met 2,5 mm² geeft eenfasig 2,78%, als driefasige kring op 400 V daarentegen 1,38%. Wie een eenfasige kring per ongeluk driefasig berekent, krijgt een ongeveer twee keer zo gunstig resultaat en kiest de doorsnede te klein.",[11,2713,2714,2715,59],{},"In een net zonder nulgeleider ligt een eenfasige kring tussen twee fasegeleiders. Ook daar is het 230 V, en omdat beide geleiders de volle stroom voeren, blijft factor 2 gelden. Welke netvorm jij hebt, lees je in ",[55,2716,2718],{"href":2717},"\u002Fblog\u002Feenfasig-driefasig-belgie","Eenfasig of driefasig in België",[26,2720,2722],{"id":2721},"twee-uitgewerkte-voorbeelden","Twee uitgewerkte voorbeelden",[392,2724,2726],{"id":2725},"verlichting-in-een-tuinhuis","Verlichting in een tuinhuis",[11,2728,2729],{},"Een koperen leiding van 45 m voedt op 230 V een zuivere verlichtingsbelasting van 8 A. Met 1,5 mm² en cos φ 0,95 volgt:",[11,2731,2732],{},[67,2733,1048],{},[11,2735,2736,2737,2740,2741,2744],{},"Dat is ",[14,2738,2739],{},"3,47%"," en dus meer dan de 3% voor verlichting. Met 2,5 mm² daalt het verlies tot ",[14,2742,2743],{},"4,79 V of 2,08%",". Voor dit criterium is 2,5 mm² de eerste passende standaarddoorsnede.",[392,2746,2748],{"id":2747},"stopcontactkring-in-een-garage","Stopcontactkring in een garage",[11,2750,2751],{},"Een koperen leiding van 30 m voert op 230 V 16 A. Met 2,5 mm² is de spanningsval:",[11,2753,2754],{},[67,2755,1071],{},[11,2757,2736,2758,2761,2762,59],{},[14,2759,2760],{},"2,78%",". Voor een andere eindkring geldt 5%, dus 2,5 mm² haalt het criterium spanningsval. Of de leiding bij haar werkelijke plaatsingswijze voldoende belastbaar is, controleer je apart; dat leggen we uit in ",[55,2763,2765],{"href":2764},"\u002Fblog\u002Fplaatsingswijzen-arei-eendraadschema","Plaatsingswijzen volgens het AREI",[26,2767,2769],{"id":2768},"gratis-online-berekenen","Gratis online berekenen",[11,2771,2772,2773,2777],{},"Met de ",[55,2774,2776],{"href":2775},"\u002Ftools\u002Fkabeldoorsnede-berekenen","spanningsval- en kabeldoorsnedetool"," controleer je een gekozen doorsnede of zoek je een voorlopige maat, gratis en zonder registratie. De tool dekt de drie Belgische netvormen (1×230 V, 3×230 V en 3N~400\u002F230 V), onderscheidt een- en driefasige kringen en neemt de belasting in A, W, kW of kVA voor koper en aluminium. Het resultaat vergelijkt de standaarddoorsneden en toont spanningsval en beveiliging apart.",[11,2779,2780,2781,2784],{},"De berekening loopt rechtstreeks in de browser, schuifregelaar en resultaat reageren zonder vertraging; dezelfde rekenkern is ook als PlanElec-API beschikbaar. De tool is gebouwd voor de ",[14,2782,2783],{},"voorstudie",". Plaatsingswijze, groepering, omgevingstemperatuur, isolatietype, reactantie, kortsluitvastheid, uitschakelvoorwaarden, klemmen en fabrikantgegevens horen bij de verdere vakkundige dimensionering.",[26,2786,2788],{"id":2787},"wat-doe-je-bij-te-veel-spanningsval","Wat doe je bij te veel spanningsval?",[11,2790,2791],{},"De meest directe hefboom is een grotere doorsnede. Vaak is een kortere route of een onderverdeler dicht bij de belasting de betere oplossing. Aluminium loont bij lange voedingsleidingen, maar vraagt passende aansluittechniek en een eigen dimensionering. Bij een laadpunt of warmtepomp verlaagt een driefasige voeding bij hetzelfde totale vermogen de stroom per fase sterk. Lastmanagement houdt bovendien aansluiting en beveiliging binnen het toegelaten bereik.",[26,2793,2795],{"id":2794},"veelgemaakte-fouten","Veelgemaakte fouten",[76,2797,2798,2804,2810,2816,2822],{},[79,2799,2800,2803],{},[14,2801,2802],{},"Altijd met 3% rekenen."," 3% geldt voor verlichting, 5% voor andere eindkringen.",[79,2805,2806,2809],{},[14,2807,2808],{},"Alleen de automatentabel bekijken."," Lengte en werkelijke belasting staan daar niet in.",[79,2811,2812,2815],{},[14,2813,2814],{},"Heen en terug invoeren."," Gevraagd is de enkele afstand; de factor 2 zit al in de eenfasige formule.",[79,2817,2818,2821],{},[14,2819,2820],{},"Voorliggende delen vergeten."," De spanningsvallen van alle deeltrajecten tellen op.",[79,2823,2824,2827],{},[14,2825,2826],{},"Spanningsval voor de hele dimensionering houden."," Plaatsingswijze en kortsluitgedrag zijn aparte controles.",[26,2829,2831],{"id":2830},"veelgestelde-vragen","Veelgestelde vragen",[392,2833,2835],{"id":2834},"voer-ik-de-kabellengte-enkel-of-dubbel-in","Voer ik de kabellengte enkel of dubbel in?",[11,2837,2838],{},"Enkel: de afstand van de verdeler tot de verbruiker. Bij eenfasige wisselstroom verrekent de factor 2 de teruggeleider, driefasig reken je met √3.",[392,2840,2842],{"id":2841},"mag-een-verlichtingskring-in-15-mm","Mag een verlichtingskring in 1,5 mm²?",[11,2844,2845],{},"Ja. Tabel 5.1 bij onderafdeling 5.2.1.2 laat 1,5 mm² toe voor kringen zonder stopcontacten, volgens Tabel 4.11 beveiligd met hoogstens een automaat van 16 A of een smeltzekering van 10 A. Een lange leiding kan door de spanningsval toch 2,5 mm² of meer vragen.",[392,2847,2849],{"id":2848},"is-een-grotere-doorsnede-altijd-beter","Is een grotere doorsnede altijd beter?",[11,2851,2852],{},"Ze verlaagt het verlies, maar kost meer, neemt plaats in en moet in de klemmen passen. Kies de eerste maat die alle relevante controles doorstaat.",[392,2854,2856],{"id":2855},"wat-heeft-de-keuring-nog-nodig","Wat heeft de keuring nog nodig?",[11,2858,2859,2860,2864],{},"De tool levert een navolgbare spanningsvalberekening. Het ",[55,2861,2863],{"href":2862},"\u002Fblog\u002Felektrische-keuring","elektrisch dossier voor de keuring"," bevat daarnaast het eendraadschema, het situatieplan en de metingen ter plaatse; de beoordeling doet het erkend organisme.",[26,2866,2868],{"id":2867},"van-voorberekening-naar-controleerbare-ontwerpnota","Van voorberekening naar controleerbare ontwerpnota",[11,2870,2871],{},"Een goed rekenblad bewaart meer dan het eindpercentage. Noteer verdeler en kring, elk kabelsegment, de enkele trajectlengte, geleidermateriaal, faseaansluiting, nominale spanning, ontwerpstroom en de bron van die stroom: typeplaatje, fabrikantstudie of uitdrukkelijk gekozen scenario. Ook een aangenomen arbeidsfactor blijft zichtbaar als aanname gemarkeerd.",[11,2873,2874],{},"Leg daarna het aanvaardingscriterium met bron vast. Omdat afdeling 5.2.5 naar de regels van goed vakmanschap verwijst, kan een projectwaarde volgen uit de toepasselijke norm, een bestek, een eis van de netbeheerder of de toestelgrenzen. De 3 en 5% uit dit artikel zijn het gebruikelijke vertrekpunt; gevoelige apparatuur kan een engere spanningsband aan de klemmen vragen.",[11,2876,2877],{},"Houd daarna de controles apart. Spanningsval beantwoordt één vraag. De geleider moet ook voldoende stroombelastbaar zijn bij de echte plaatsingswijze, passen bij overbelasting- en kortsluitbeveiliging, uitschakelvoorwaarden en thermische belasting halen en mechanisch in klemmen en kabelwegen passen. Meerdere afzonderlijk aanvaardbare deeltrajecten kunnen samen toch te veel spanningsval geven. Hoofdvoeding, voeding van de onderverdeler en eindkring horen daarom samen in de balans.",[11,2879,2880],{},"Vergelijk na de uitvoering het gedocumenteerde traject en de geleider met de werf. Metingen tonen netspanningscondities of overgangsweerstanden die een zuiver weerstandsmodel niet voorspelt. Wijzigen traject, materiaal of fase, dan werk je eendraadschema en kabellijst bij. Zo'n nota overtuigt installateur en keuringsorganisme meer dan een schermafbeelding met een groen vinkje.",[392,2882,2884],{"id":2883},"wijzigingen-bijhouden","Wijzigingen bijhouden",[11,2886,2887],{},"Bewaar invoer en resultaat per ontwerpversie. Wijzigt de kabellengte door het echte traject, de aansluiting van een- naar driefasig of de belasting door een ander toestel, dan reken je opnieuw en noteer je de bron. Vergelijk percentage, eindspanning en de opgetelde deeltrajecten. Een grotere geleider verbetert de spanningsval, maar beantwoordt geen open vraag over beveiliging, klemmen of plaatsing.",[392,2889,2891],{"id":2890},"het-resultaat-correct-formuleren","Het resultaat correct formuleren",[11,2893,2894],{},"Schrijf niet „kabel is conform”, maar bijvoorbeeld: „Voor de gedocumenteerde belasting, lengte, nominale spanning en het vermelde projectcriterium geeft het weerstandsmodel deze spanningsval.” Vermeld de punten die nog open staan. Zo kan een ontwerper het resultaat narekenen, invoer wijzigen en de overige dimensioneringsbewijzen aansluiten. Een scenarioberekening voor een nog onbekende belasting markeer je als zodanig en vervang je zodra het echte toestel vastligt. Noteer ook of de lengte uit het plan, een meting of een voorzichtige aanname komt.",[26,2896,2898],{"id":2897},"spanningsval-rechtstreeks-in-je-project-controleren","Spanningsval rechtstreeks in je project controleren",[11,2900,572,2901,2904,2905,59],{},[55,2902,576],{"href":2903},"\u002F"," teken je kabelroutes op het grondplan; de lengte gaat mee in de stroomkring. De zelfcontrole berekent daaruit voor elke eindkring de spanningsval tegenover de richtwaarden 3% en 5% en meldt overschrijdingen samen met de controle van doorsnede tegenover beveiliging. Welke regels ze dekt, lees je in ",[55,2906,2908],{"href":2907},"\u002Fhelp\u002Fwat-controleert-de-zelfcontrole","Wat controleert de zelfcontrole",[26,2910,2912],{"id":2911},"gerelateerde-artikelen","Gerelateerde artikelen",[76,2914,2915,2920,2924,2930,2936,2942,2948],{},[79,2916,2917],{},[55,2918,2919],{"href":2435},"Kabeldoorsnede per automaat",[79,2921,2922],{},[55,2923,2718],{"href":2717},[79,2925,2926],{},[55,2927,2929],{"href":2928},"\u002Fblog\u002Flaadpaal-arei","Laadpaal installeren volgens het AREI",[79,2931,2932],{},[55,2933,2935],{"href":2934},"\u002Fblog\u002Feigen-stroomkring-verplicht-toestellen","Toegewijde kringen voor toestellen",[79,2937,2938],{},[55,2939,2941],{"href":2940},"\u002Fblog\u002Fkabelwegen-en-kabellengtes-bepalen","Kabeltracés en kabellengtes bepalen in je elektrisch plan",[79,2943,2944],{},[55,2945,2947],{"href":2946},"\u002Fblog\u002Fledstrip-voeding-berekenen","Ledstrip berekenen: voeding, voedingspunten en doorsnede",[79,2949,2950],{},[55,2951,2953],{"href":2952},"\u002Fblog\u002Fwarmtepomp-eendraadschema","Een warmtepomp op het eendraadschema tekenen",[11,2955,2956,2957,2962],{},"Officiële basis: ",[55,2958,2961],{"href":2959,"rel":2960},"https:\u002F\u002Feconomie.fgov.be\u002Fnl\u002Fpublicaties\u002Falgemeen-reglement-op-de",[634],"FOD Economie, AREI Boek 1 V06",", in het bijzonder afdeling 3.2.2 (soorten systemen), onderafdelingen 4.4.1.4 en 5.2.1.2 en afdeling 5.2.5.",{"title":638,"searchDepth":639,"depth":639,"links":2964},[2965,2966,2967,2968,2969,2970,2974,2975,2976,2977,2983,2987,2988],{"id":2407,"depth":639,"text":2408},{"id":2417,"depth":639,"text":2418},{"id":2439,"depth":639,"text":2440},{"id":2485,"depth":639,"text":2486},{"id":2631,"depth":639,"text":2632},{"id":2721,"depth":639,"text":2722,"children":2971},[2972,2973],{"id":2725,"depth":649,"text":2726},{"id":2747,"depth":649,"text":2748},{"id":2768,"depth":639,"text":2769},{"id":2787,"depth":639,"text":2788},{"id":2794,"depth":639,"text":2795},{"id":2830,"depth":639,"text":2831,"children":2978},[2979,2980,2981,2982],{"id":2834,"depth":649,"text":2835},{"id":2841,"depth":649,"text":2842},{"id":2848,"depth":649,"text":2849},{"id":2855,"depth":649,"text":2856},{"id":2867,"depth":639,"text":2868,"children":2984},[2985,2986],{"id":2883,"depth":649,"text":2884},{"id":2890,"depth":649,"text":2891},{"id":2897,"depth":639,"text":2898},{"id":2911,"depth":639,"text":2912},"Bereken de spanningsval van je kabel en zie meteen vanaf welke lengte een grotere doorsnede nodig is. Formule, lengtetabel en gratis rekentool voor België.","nl",{},"\u002Fblog\u002Fvoltage-drop-cable-sizing.nl",{"title":2391,"description":2989},"spanningsval-berekenen-kabeldoorsnede","blog\u002Fvoltage-drop-cable-sizing.nl",[2997,2998,2999,685],"spanningsval","kabeldoorsnede","rekentool","ZOXy5Yfg7eva64k29WALF-szr8HSVrkaCfokLwe7Kms",[]]