Load Specs
W
System Phase
Power Factor
Adjust Power Factor1
Calculated Line Current
12.50 Amps
Active operating current load.
Recommended Breaker Size
20 Amp
Continuous load breaker sizing (1.25x load factor).
Total Power Input
1,500 Watts
Equivalent to 1.500 kW.
Equivalent Horsepower
2.01 HP
Standard mechanical motor horsepower equivalent.
Current Sizing Rules
Calculations are derived from basic alternating current power formulas:
- Single Phase Current: Current (I) = Power (P) / (Voltage (V) × PF)
- Three Phase Current: Current (I) = Power (P) / (1.732 × Voltage (V) × PF)
The 125% Rule: The National Electrical Code (NEC) requires that branch circuit overcurrent protection devices (circuit breakers or fuses) be sized at **125% of continuous loads** plus 100% of non-continuous loads. This prevents nuisance tripping under heating conditions.