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So we are putting up some string lights on our covered patio and want to use those instead of our patio light fixture right outside the door. I've removed the light fixture and there is an octagonal electric box. I was hoping to put an electrical socket in there and plug the string lights in through there to control with the light switch inside the house. What can I use the fit over that octagonal box and keep the socket in use and weather proof? I'm having the hardest time finding something to work. The octagonal metal box is in brick and mortar. I'd prefer to NOT remove the box and replace with a different one if possible. The box looks like this: enter image description here

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    Please do not post the same question twice, especially as two different users (gman and Gerret). You should look into merging the two accounts. – Daniel Griscom Jun 3 '16 at 1:20
  • The first account was a guest account. Didn't want to post again, but I couldn't respond on the other one. I will merge. In the meantime, I have a question about something I'm trying to accomplish – GMan Jun 3 '16 at 1:24
  • I have officially requested the merge. Thanks Daniel. – GMan Jun 3 '16 at 1:38
  • Is this a 3.5" or a 4" octagon box we're dealing with here? – ThreePhaseEel Jun 3 '16 at 1:48
  • 3.5" box, which has made it tougher to deal with. I'm not opposed to drilling into the brick and using tapcon screws to anchor if needed – GMan Jun 3 '16 at 1:52
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One possible idea for this connection is to look for an octagon electrical box cover that looks like this:

enter image description here

Then acquire a box to box electrical connector that looks like this:

enter image description here

This can then be joined to a back hole in an appropriate electrical box that gets surface mounted to the face of the wall. This box would then accommodate the needed outlet and exterior in-use cover assembly.

  • Good solution. If you can't find a cover with a knockout you can make one with a hole saw or knockout kit. Also, a chase nipple will bring the box (probably a bell box) tighter to the cover than the box to box connector. 😊 – ArchonOSX Jun 3 '16 at 11:15
  • The advantage of the box to box connector is that it can be secured to the octagon box cover before mounting the cover to the existing box. The typical chase nipple would be a bit more complicated to use unless either the nut or nipple were bonded to the box cover. I suppose the nipple could be used with two nuts but then it almost becomes almost the same as what I suggested. – Michael Karas Jun 3 '16 at 11:37
  • Hmm yes. I was just thinking I would thread the nipple through the cover into the bell box and cover and tighten so the screws on the cover were still open, make the joints in the existing box and then attach it to the octagon box creating a flush fit. – ArchonOSX Jun 3 '16 at 11:44
  • Great ideas Michael and Archon. I think this is the right way to go with it. I'm leaning toward the chase nipple over the box connector to get it as flush as possible, but the idea is essentially the same. I'll let you know how it goes. Thanks! – GMan Jun 3 '16 at 14:40
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    Hold on. How do you physiclly support the box you are adding? You can't have it dangling by the nipple, they are not listed for that. – Harper - Reinstate Monica Jun 4 '16 at 0:28

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