Questions: Which instrument can be used to find out which circuit to turn off without shutting off the breakers one by one? A) LOTO B) Circuit finder C) Mains tes D) Hot-cold-hot test

Which instrument can be used to find out which circuit to turn off without shutting off the breakers one by one? A) LOTO B) Circuit finder C) Mains tes D) Hot-cold-hot test
Transcript text: Which instrument can be used to find out which circuit to turn off without shutting off the breakers one by one? A) LOTO B) Circuit finder C) Mains tes D) Hot-cold-hot test
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Solution

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The answer is the second one (B): Circuit finder.

Explanation for each option:

A) LOTO (Lockout/Tagout) - This is a safety procedure used to ensure that dangerous machines are properly shut off and not started up again before the completion of maintenance or repair work. It is not an instrument used to identify circuits.

B) Circuit finder - This is a tool specifically designed to identify which circuit breaker controls a particular outlet or fixture without having to turn off breakers one by one. It is the correct choice for this question.

C) Mains test - This term is not specific to an instrument that identifies circuits. It generally refers to testing the main electrical supply, but not to finding specific circuits.

D) Hot-cold-hot test - This is a method used to verify that a circuit is de-energized before working on it, but it does not help in identifying which circuit breaker controls a specific circuit.

In summary, the correct instrument to find out which circuit to turn off without shutting off the breakers one by one is a circuit finder.

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