If we can't judge which way is the problem, we can turn off all the switches in the power distribution box, and then send the power one by one in the following order: main switch, sub main switch, separate off, etc. when we turn on a switch, it can't be turned to. These safety switches are responsible for shutting off the power supply when an electrical fault develops in the wiring system. The fault could be faulty electrical appliances, a short circuit, an earth fault, damage to electrical wiring or other electrical issue. There are only five possible reasons. Switch damage Switch what bad things can happen, trip is more common for no apparent reason. Can take trip switch load down the line, change other circuit. Take a look at the photographs below, we have circled the RCD Big Switch, which will have tripped, and turned the power off. The "Push to Test" button will. If the fuse box in your home keeps tripping, it's a warning that the electrical system has a problem that shouldn't be ignored. It often happens when you draw too much power from a single circuit. But what does that mean — isn't power just power? Not exactly. Current, voltage, and resistance need to be kept.
