Hi guys, would you guys agree with not using your loop tester to test at mains when its above 100A supply ? Cause ive heard that the earth fault loop impedance and PSSC test should only be carried out on installations with a main circuit breaker of 100A or less. For larger installations the value should be calculated. What if you don't have the values of the transformer etc to do the calculation?
Did you like this article? Share it with your favourite social network.