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Fault loop impedance quiz
Just imagine a scenario where the impedance of the cables going to your load was so high that the circuit breaker didn't trip when there was a short circuit. A 20Amp "D" type circuit breaker for example requires about 250Amps to trip immediately.
Fault loop impedance quiz
Just imagine a scenario where the impedance of the cables going to your load was so high that the circuit breaker didn't trip when there was a short circuit. A 20Amp "D" type circuit breaker for example requires about 250Amps to trip immediately.