An RCD (or GFCI in the States) is a kind of circuit breaker that trips when the amount ... Making a device to test an RCD is easy; a resistor between hot and the protective ground circuit ...

When the breaker trips again, you know you’ve reached your limit for that circuit. Redistribute the loads more evenly between ...

Even if you aren’t an electronics person, you probably have a working knowledge of circuit breakers. When the lights go out, you find the circuit breaker and flip it back to the on position.

We all know that conventional electrical circuit breakers are a handy means of preventing untoward situations from arising. You’ve plugged in your faulty toaster, and it starts to go awry ...