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Cable size and voltage drop

Enter the length, the current or power and the cable size: the calculator gives the voltage drop and the smallest size that respects the limit.

one way, from the panel to the last point

Voltage drop
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That is
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Design current
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Recommended cable size
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Disjoncto helps design the installation. The official inspection is still carried out by an accredited body.

Calculation: ΔU = 2 · ρ · L · I · cos φ / S single-phase, √3 · ρ · L · I · cos φ / S three-phase, copper ρ = 0.0225 Ω·mm²/m. Maximum ratings used: 1.5 mm² 16 A · 2.5 mm² 20 A · 4 mm² 25 A · 6 mm² 32 A · 10 mm² 40 A.