What is the first step to take when working on an electrical circuit?

Shutting off the power is essential when working on an electrical circuit to ensure safety. This step minimizes the risk of electrical shock or accidental energization while conducting repairs or maintenance. Always disconnecting the power supply before beginning any work is a fundamental principle of electrical safety. It is an important precaution that protects not only the technician but also any others who may inadvertently come into contact with the circuit during the work process.

Turning on the power supply before any maintenance can lead to serious accidents, as it exposes individuals to live electrical components. Calling a supervisor may be necessary depending on the situation, but it should not be the first step when beginning work. Checking the circuit for faults is a vital part of the diagnostic process, but this should only be done after ensuring that the power has been shut off to prevent injury.