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Confuse AFCI and GFCI

Understanding the difference between arc-fault circuit-interrupter protection and ground-fault circuit-interrupter protection is the hallmark of a successful (read: safe and accurate) electrical job. Pro electricians know mixing them up is a recipe for disaster.

In short, GFCI protection belongs outdoors, in areas of the home where appliances are used. or where there could be moisture (garages, crawlspaces, bathrooms, et al). GFCIs monitors the electrical flow between outlets and anything that might be plugged in to said outlet. If something goes awry, the GFCI immediately halts the power — protecting you from electrical shock.

As for AFCI protection, it is used in general living spaces (living room, dining area, bedrooms, etc.). Its purpose? Fire protection. AFCIs look for arcs or potential arcs, not only in the circuits but also in any conductors associated with the circuits. If one is detected, the AFCI shuts off the circuit so things don’t go up in flames.

McKusker and Duncan agree that before you start working with electrical outlets, it is absolutely essential that you understand the difference between GFCI and AFCI. If there is any doubt at all, call a pro.

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Tape a Circuit Breaker Into the “On” Position

We get it — it’s annoying when a circuit breaker trips every time you use your hair dryer or microwave, forcing you to trudge down to the basement or out to the garage to reset it in the cold early-morning hours.

But circuit breakers trip to make you aware of problems, like overloaded and/or short circuits (among other complicated problems). Tripping is simply a sign that the circuit breaker is doing its job, says McKusker. If you try to outsmart it with duct tape, you might keep the circuit from tripping, but you’ll risk more serious problems — namely, fire or electrocution (scary!).

Instead, find out what is causing the trip and fix the problem. The best way to do this? Check with an electrician. The solution might be as straightforward as replacing finicky appliances. Or you might be advised to add additional circuits or to have circuitry repaired. In any case, skip the tape and get some professional advice!