Circuit Breaker Calculator
Inputs
W
%
Tab to move between fields
Results
Breaker Size
20 A
Wire Gauge (AWG)12
Actual Current Draw15 A
Required Amps (w/ safety)18.75 A
Load Percentage75%
NEC 80% Rule1
1
Identify Input Parameters
= Total Load = 1800, Voltage = 120, Safety Factor = 125
= 3 input(s) provided
2
Calculate Breaker Size
Breaker Size
= 20
= 20
3
Calculate Wire Gauge
Wire Gauge
= 12
= 12
4
Calculate Actual Current Draw
Actual Current Draw
= 15
= 15