Good day, guys! I need to know the proper AIC rating of circuit breakers for homes, so I've read about calculating short circuit current. Now, I'm confused.
One says use Ohm's Law.
Isc = Volts / (internal resistance of breaker + wire resistance)
I got around 5,000 amps.
And one uses the point-to-point method. This one yields a lower value, about 2,000 amps.
We have 230V, 60 Hz, single-phase service.
Any help understanding this would be much appreciated. Thanks!