Volt Drop % Calculator

Lookup Vc in As/Nzs3008:2017 and input below

Volt Drop

VD up to 7% where a substation is located on the premises.


Maximum Demand of the cct, CB Rating, total connected load

Parallel Cables

Current input above is the current passing through a single cable.
e.g. 400A total over 4 parallel single core cables (assuming good even contact and conductor size per cable) 400 / 4 = 100A Per Cable use this number for calculation