Which method is commonly used to test electrical outlets?

Testing electrical outlets is commonly done using a multimeter because it provides precise measurements of voltage, current, and resistance. This tool is invaluable for diagnosing outlet functionality, verifying that the outlet is supplying the correct voltage and identifying any potential issues, such as open or short circuits.

When using a multimeter, a technician can measure the AC voltage to ensure it matches expected levels (typically 120 volts in residential settings in the U.S.) and assess if there are any grounding issues or failures. This method is more reliable than visual inspections alone, as it can detect problems not visible to the naked eye, such as faulty wiring or connections.

Auditory clues, like listening for sounds, may not provide definitive information about an outlet's condition, and relying on color checks of wiring does not address the electrical integrity of the outlet itself. Therefore, utilizing a multimeter is the best practice for accurately testing electrical outlets.