Circuit
Pick the circuit you are sizing. AC circuits can be single or three phase.
Material
Phases
Run details
Current, voltage, one-way length and the maximum drop you will accept.
Cable reference
PVC-insulated ampacity for copper and aluminium conductors.
Cross-sectionCopper ampacityAluminium ampacity
1 mm²11 A8 A
1.5 mm²14 A10 A
2.5 mm²19 A14 A
4 mm²25 A19 A
6 mm²32 A24 A
10 mm²44 A34 A
16 mm²59 A45 A
25 mm²77 A60 A
35 mm²95 A74 A
50 mm²118 A92 A
70 mm²148 A115 A
95 mm²180 A140 A
120 mm²208 A162 A
Prefer a guided path? Start with the Load Calculator, then move to the System Sizer.