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Voltage Test
Part of any electrical safety check involves observing the behavior of your home’s electronic devices. If they seem to be behaving irregularly, such as lights dimming or flickering, it’s a good idea to check the voltage on that outlet. The cause may be something as simple as a loose wire, but a voltage test is the first step toward getting to the root of the issue.
Using a volt meter or multimeter set to measure voltage, check the power at the outlet. For standard 120-volt residential outlets, you’ll expect to find readings between 110 and 130 volts. If you’re seeing readings outside of that range, it’s time to start problem solving!
For a good introduction to troubleshooting your electrical system, see Troubleshooting: How to Fix a Light. And, here’s a solid primer on how to use a digital or analog multimeter.
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The Five Senses Test
We’ve already talked about visual inspections on this safety checklist, but don’t forget your other senses.
Place a hand on outlets and light switches, checking for excessive heat. (Remember that dimmer switches often generate heat when the lights are on, but it should never be hot enough to be uncomfortable or painful to the touch.)
Is there a “hot wire” smell around a switch or outlet? Turn off the power to the switch or outlet at the breaker, verify the power if off using a non-contact voltage tester, and take a closer look. You may need to replace that switch or outlet.
Finally, if you hear popping and crackling in an outlet or switch, turn off the power to the outlet or switch at the breaker, verify the power if off with a non-contact voltage tester and have the outlet or switch inspected asap.
And, while we’d never recommend that you use your sense of taste on an electrical checklist, do use your common sense! If something seems wrong or questionable take a closer look. And, if it’s too big of a job, call in a professional.
