Electrical – How to find the bathroom’s GFCI

electricalgfci

I have a half-bath on the main floor of our house that is small and has only 3 electrical items in it:

  1. Light above the sink (and corresponding light switch)
  2. Fart fan (and corresponding light switch)
  3. Two non-GFCI receptacles (one box, two plug-ins) next to the sink

I understand that, by itself, this is against code and that those receptacles must be GFCI-protected. However, my house is new enough (~1995?) that I'm sure this has to be up to code but I don't know what GFCI switch actually controls this.

My questions:

  1. I understand a device like this will prove that it is or is not protected. But how?
  2. If it is protected, is there an easy way to find the device that protects it? (our circuit breaker box's labels are worse than useless b/c of how wrong the labels are)
  3. If I find it's not protected, then I'm definitely going to replace it to protect it. Is it correct that I should replace it with a 15A box unless both my wiring and circuit breaker are proper for 20A? (Current receptacles are 15A judging by not having the horizontal "right-angle" hole.)

Best Answer

Step One, which I do for every home I occupy, is to do a thorough map of the circuit breakers by simple trial-and-error. Check every outlet, light, and wired appliance in the home. Print a nice list of what each breaker protects and tape it over the cryptic scribbles left by sparky.

Here's my Google sheet for those who'd like it. I left my data in it as an example. Simply make a copy and replace the data with yours. I fold it down the middle, book-style, and tape it to the panel door at the fold so it fits nicely inside.

  1. The device you link doesn't locate GFCI outlets, just the specific breaker you're on. I honestly don't know why a homeowner with just one residence to inspect would need it.

  2. There are likely only a few GFCI outlets in your home. They're commonly located in bathrooms, kitchens, and garages, among other potentially wet areas. Try them one at a time and you'll get there.

  3. If your outlets are not protected, but are on the same circuit, you should be able to simply replace the upstream outlet with a GFCI outlet and connect the downstream run to the LOAD side, thereby protecting the other outlet (and anything else downstream).

A 20A outlet is at most a few dollars more than a 15A outlet, so it's probably worth going that route. It may be legal to use a 15A outlet, however. Our resident code geeks can tell us for sure.

Related Topic