Say for example, you've got T&E 4mm cable
Volt drop is 11.0 mV/A/m
wiring regs say that your voltage drop must not be more than 4%.
4% of 230V is 9.2V.
Current rating is 36A clipped direct.
For a 32A breaker, 32 x 11mV = 352mV drop per metre of cable.
9.2 ÷ 0.352 = 26m.
How do you then calculate the max kW loads for:
-26m radial circuit
-& 26m looped circuit in this case?
Volt drop is 11.0 mV/A/m
wiring regs say that your voltage drop must not be more than 4%.
4% of 230V is 9.2V.
Current rating is 36A clipped direct.
For a 32A breaker, 32 x 11mV = 352mV drop per metre of cable.
9.2 ÷ 0.352 = 26m.
How do you then calculate the max kW loads for:
-26m radial circuit
-& 26m looped circuit in this case?