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Voltage Drop/Rise Calculator

*This calculator is a quick reference. It’s not intended as a replacement for AS3000

Calculations Are Based On Australian Wiring Rules AS3000:2018
Simplified Voltage Drop – Table C8 Voltage Drop-Simplified Method

Calculation

Select phase:
Length of the cable (L):

 
? Enter length of the cable

Current (I):
 
? Enter current

% of voltage drop allowed:
 
? Enter percentage of the voltage drop allowed

Cable conductor size: 0.00 mm2
Select phase:
Length of the cable (L):

 
? Enter length of the cable
Current (I):
 
? Enter current
Select cable size (mm2):
 
? Enter cable size
Voltage drop in %: 0.00

Table C8

Cable conductor size Single-phase (230v) Circuit (Am per %Vd) Three-phase (230v) Circuit Am per %Vd
1mm² 45 90
1.5mm² 70 140
2.5mm² 128 256
4mm² 205 412
6mm² 306 615
10mm² 515 1034
16mm² 818 1643
25mm² 1289 2588
35mm² 1773 3560
50mm² 2377 4772
70mm² 3342 6712
95mm² 4445 8927