/* */

How To Install An Exterior GFCI Outlet

All My Favorite DIY Electrical Tools – https://www.amazon.com/shop/everydayhomerepairs

I will walk you through the complete process of installation for an exterior GFCI-rated outlet. Specifically, this example includes how to handle brick/masonry walls but we will also touch on if your home has vinyl siding. I will also include feedback on the use of conduit as compared to Romex.

Free Home Maintenance Checklist:

Keep Organized With Our Home Maintenance Checklist

Friends Don’t Let Friends Tape Outlets T-Shirt: https://everyday-home-repairs.creator-spring.com/listing/don-t-tape-outlets-t-shirt

Join Our Community on Patreon: https://www.patreon.com/everydayhomerepairs

DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.


  1. Re: 15A outlets on a 20A breaker — a strict reading of the code (I don't remember the section, sorry) indicates that you can install a single 15A duplex receptacle on a 20A circuit, because the two receptacles on the face count as… multiple receptacles. Of course, your local inspector may interpret that differently.

  2. Since the brick is hollow, just make a hole in the joist and into the brick cavity the proper distance above the edge of the joist. It'll be a little trickier to fish the wire through the brick cavity, but then you won't have to notch the joist.

    Since the joist was notched, it should be sistered with another (unnotched) 2x stock, glued and nailed to the joist above the notch. I'm not sure how far to each side of the notch is required to bear the load across the notch — I'm not THAT much of an expert. And, rather than a notch, the cut should be tapered to distribute stress across the joist rather than focusing it in the corners of the notch.

  3. My understading of code (I reread) is that because you are using a duplex outlet you dont actually need a 2nd outlet. You didnt do this- but I think folks should not silicon underneath the box because thats how any trapped water drains out

  4. There's a few recommendations I'd like to make. 1) always use the ears in wet locations like that. The screws through the back are for damp location only.
    2) always seal your penetration through the wall both inside and out. This prevents water seepage, helps maintain the climate controlled space, and prevents bug entry.
    3) although there's an exception for short runs through wet locations, best practice is to use a wet location rated cable like UF here. Best practice is to sleeve it through the wall as well.
    4) if there's more than 3 NM and/or UF cables running through the same hole you have to derate the cable.
    5) although not all holes require it, for the longevity of the floor you should always sister up a reinforcement board at all knotches and holes through a floor joist.
    6) in that location the gfci outlet need to be of the TRW (TRWR) type. It should have WR marked on its face.

  5. You are the goat 🐐 of home repairs

  6. Is there a "d" in your "masondry?" Or have my ears failed me?

  7. The Excellent Labourer sent me

  8. Probably a dumb question, but would you have to ground the metal junction box cover? I know you are supposed to bond metal junction boxes, just don't know if it would apply to a cover if the junction box is plastic.

  9. I have two points that lean toward your not using conduit through the drilled hole. 1. 2017 NEC 334.10 (A)(2). NM shall be permitted to be installed or fished in air voids in mason army block or tile walls. A drilled hole is not an air void in the block. It was not made with the hole you drilled. NMC uses do not apply since you did not use it. 2. 334.12 Uses not permitted. 334.12(B) 14:43 NM shall not be used under following conditions or locations. (4) In Wet or damp locations. The exterior wall outside is a wet location. If you have a large overhang, it would be a damp location. According to Article 100 Definitions Location, Wet in unprotected locations exposed to weather is a wet location. NM can not be installed in a wet location. In the handbook, the inside of a raceway in a wet location is considered a wet location.
    So, no conduit is not legal through drilled holes in masonry, and putting a conduit through the hole to the box in a wet location can not have NM installed either. Must be NMC or UF.

  10. Hi Scott just wanted to add per your point about the multiple 15A on a 20A circuit:
    Even a single 15A duplex is fine, because it's two outlets. The only time you have to do the 20A on 20A thing is if it's a SINGLE outlet on the yoke.

  11. This is incredible timing, I was just searching for this thing through your channel a few days ago

  12. Hey Scott, I'm a big fan of your videos. Home Depot has 1/2 and 3/4 service entrance connectors. I think keeping the hole smaller would be better in my situation so Ill probably pick the 1/2. My plan is to drill the 1/2 hole through my wall+stucco from the inside out from an inside outlet hole to draw the power from that. And then attach the box on the outside. Any tips on drilling through the wall+stucco?

  13. A duplex receptacle is 2 outlet and 1 15 amp receptacle on a 20 amp circuits compliant.

  14. You have to build a chase above your panel. You can’t have exposed Romex like that

  15. A job for a licensed electrician only – this is not a DYI project

  16. 12:05 You said that you can install a 15amp receptacle onto a 20amp breaker. Technically, you already met that. By installing a duplex receptacle. So no need to install an other on the back of the house.

    I know you will though. But I just wanted to make sure you’ve already met that code by installing a duplex receptacle.

  17. Since you had to notch the floor joist. I highly recommend you go back and drill out the corners. Make the corners rounded instead of at a 90° angle. When rounded, it minimizes the chances of the wood splinting away in the future.

  18. I was surprised that you drilled so low on the brick, the outcome looks predictable.

  19. I would have put a few inches of conduit with a right-angled fitting, though I would have considered myself ridiculous for doing so. I would also use Fischer or Rawl plugs in that brick, instead of Tapcon, since it's so brittle.

  20. I had to listen twice where you talk about adding additional 15 amp outlets on a 20 amp circuit because you failed to mention that you still need 12 ga. wire. A little confusing but not incorrect.

Leave a Reply

Your email address will not be published. Required fields are marked *