What are the three steps in the proper procedure for testing a circuit for voltage?

The three steps in the proper procedure for testing a circuit for voltage begin with checking a known circuit first. This establishes a reference point and ensures that the measuring device is functioning correctly and accurately. By verifying a known circuit, one can confidently assess the surrounding conditions before proceeding to the circuit in question.

Following this, the next step is to check the circuit in question. This allows for the measurement of voltage in the specific circuit of concern, helping to identify whether it is operating correctly or if there are issues that need to be addressed. This step is crucial for diagnosing potential faults or confirming that the circuit is working as intended.

Lastly, checking the live circuit is important if there is any uncertainty about the operational status of the circuit. Understanding the live circuit condition can help clarify whether the circuit is energized and can assist in safety assessments before any repairs or alterations are made.

This systematic approach helps ensure safety and effectiveness when working with electrical circuits, which is why this response aligns best with the correct procedure in handling voltage testing.