Enter the load in kW. It gives a quick breaker rating and cable size for 400 V three phase, using 4-core copper XLPE/SWA cable. It is useful for early schedules and checks.
This is a thumb-rule selection. PVC cable of the same size carries less current. Before final selection, check the full-load current, derating for grouping and temperature, voltage drop and fault level.
Use the Cable Voltage Drop calculator with the cable size and length.
Yes. Use the Electrical Load & MDB/SMDB calculator for the load schedule, demand load and incomer.
Cable Voltage Drop · Electrical Load & MDB · Protective Earth Conductor
Results are for preliminary design. Verify final selections against project specifications, applicable codes and manufacturer data.