Q:

How do you test electrical circuits?

A:

Quick Answer

In order to test an electrical circuit, add each wire of a two-wire circuit tester to the wire or outlet. If the circuit is on, the tester should display the voltage on the reader or light up.

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Full Answer

Testing an electric circuit is useful for a couple of key reasons. It can let homeowners know that a circuit is truly shut off before they start working on wiring. It can also help them find faulty wiring and broken circuit breakers.

To use a circuit tester on a wire, switch the tester to the correct voltage type. Attach one of the tester cables to the wire and another to a grounding object. To use a circuit tester on an outlet, insert each wire of the tester into the outlet plugs. To test the circuit on a circuit breaker, touch one of the tester cables to a grounding object and the other on the breaker's terminal screw.

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