Cable size and volt drop calculator

SJE Electrical Installations

*Calculator for General Guidance Only

Cable:

Load

Voltage Length of Cable M

Suggested Min. Cable Size mm

Volt Drop volts. Drop % Load = amps.

Ohms Law
V = I x R I = V / R R = V / I
V = Volts, I = Current in Amperes and R = Resistance in Ohms