Calculadora de Carga Elétrica Grátis
Calcule a carga elétrica total da sua instalação. Dimensione o quadro elétrico com segurança e precisão.
W
%
Current Draw
12.5 A
With Safety Factor15.6 A
Recommended Breaker20 A
Current Draw vs Total Watts
Formula
## Electrical Load Formula **Amps = Watts / Volts** **NEC Safety Factor = 125%** (for continuous loads) Breaker sizes are standard: 15A, 20A, 30A, 40A, 50A. Always round up to the next standard size.
Exemplo Resolvido
1,500W load on a 120V circuit with 125% safety factor.
- 01Amps = 1,500W / 120V = 12.5A
- 02With safety = 12.5 × 1.25 = 15.6A
- 03Recommended breaker = 20A
Perguntas Frequentes
What is the NEC 80% rule?
The National Electrical Code requires that continuous loads not exceed 80% of the breaker rating (or equivalently, the breaker should be 125% of the load). A 20A breaker handles 16A continuous.
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