Question

The ground fault protection system of a service will open all underground wires of the faulted circuit. What will the largest time delay be how long for grounded fault currents equal to or greater than 3,000 amps

1. 10 milliseconds
2. 100 milliseconds
3. 500 milliseconds
4. 1 second

Answer 1

The largest time delay for grounded fault currents equal to or greater than 3,000 amps is 100 milliseconds.

Step-by-step explanation:

The ground fault protection system of a service will open all underground wires of the faulted circuit. The largest time delay for grounded fault currents equal to or greater than 3,000 amps is 100 milliseconds.