Fault level & Voltage Drop Calculator
Voltage Drop Simplified
Force on Cables
Power Calculation
Ohms Law
Energy Cost Calculator
Voltage Drop Simplified
Calculation’s based on Australian Wiring Rules AS3000:2007 - Clause 3.6 C4
Simplified Voltage Drop – Table C7 Voltage Drop-Simplified Method
CALCULATE
Voltage Drop
Cable Size
Supply Voltage
Cable Run Length
Mtr’s
Current Load
A
Cable Size
mm
2
Enter Values
SinglePhase
ThreePhase
*
*
1
1.5
2.5
4
6
10
16
25
35
50
70
95
Cable Run Length must be real number(ex:230 or 1.25).
Current Load must be real number(ex:230 or 1.25).
Cable Size must be real number(ex:230 or 1.25).
Desc.
Cable Run Length
Current Load
Max Volt Drop
Unit
m
Am
%Vd
Result
TABLE C7
VOLTAGE DROP-SIMPLIFIED METHOD
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
