How do you use a test meter to see if circuit is hot?

To check if a circuit is hot using a test meter, first ensure your multimeter is set to the appropriate voltage setting. Then, insert the probes into the circuit: one probe should contact the live wire or terminal, while the other should connect to a ground or neutral point. If the meter displays a voltage reading, the circuit is hot; if there’s no reading, the circuit is likely de-energized. Always follow safety precautions, such as wearing insulated gloves and ensuring the meter is rated for the circuit's voltage.