Question

how do we check whether a tester is working or not ? ​

Answer 1

Answer:

Confirm that the circuit tester is working by carefully touching the hot wire with one lead and a neutral wire with the other. The tester will light if it's working. Touch the hot wire with one lead and the ground wire with the other (Photo 1). If the tester lights, the ground wire is good and you can use it.

Explanation:

Answer 2

Explanation:

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