Voltage Drop & Wire Gauge Calculator

Off-grid solar, battery storage banks, and AC electrical sizing

System Parameters

A

Current: 25.00 A | Power: 1,200 W

m

Calculates 2-conductor round trip loop (out and return).

Recommended Conductor Gauge
Compliant (within limit)

Meets target max drop of 1.0% (0.48V max limit).

Voltage Drop
0.59%
0.283 V lost
Loop Resistance
0.028 Ω
Total 2-way
Loop Distance
30.0 m
98.4 ft
Load End Voltage
47.72 V
7.1W cable loss

Conductor Comparison Matrix (20°C Copper)

Ordered 14 AWG to 4/0 AWG
Gauge Area (mm²) Resistance Drop (V) Drop (%) Status