Question

what is electric tester? for what purpose it is used

Answer 1

Electrical testers are used to check both AC and DC voltage, continuity, circuit problems, amperage, ​shorted and open circuit problems, and to make sure the voltages are correct at the electrical panel.

Electricians use these electrical testers every day to see if a circuit or device is energized. They are crucial safety tools that keep electricians out of harm's way and tell them if there is trouble on a circuit or device. 

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