How to tell which wire is hot without a multimeter?

With everything in place, the power source is turned on. This action initiates the flow of electricity through the wire and into the socket, where it comes in contact with the light bulb.

If the light bulb illuminates upon turning on the power, it signifies that the wire is indeed "hot," meaning it is carrying an electrical current. This result indicates that the wire is functioning correctly and is ready for use.

To conduct the testing of a wire, one must gather the necessary equipment. This includes a socket, which serves as the base for the test, a functioning light bulb to indicate the Flow of electricity, and the wire itself, which is the subject of the test.

The next step involves attaching the wire securely to the terminals of the socket. This connection is crucial as it establishes the path for the electrical current to flow. It's important to ensure a snug fit to prevent any disruptions during the testing process.

Once the wire is securely connected, the light bulb is then screwed into the socket. The bulb acts as an indicator, providing a visual representation of whether or not the wire is carrying an electrical charge.