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Old 02-20-2012, 12:17 PM   #1
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Fishing new circuits to breaker box in wall

I'm looking to run some new circuits from my main breaker box which is in the garage. I've done this before, but the breaker box was mounted on a basement wall and I had access to all sides of it. This box is flush with the drywall in the garage. Here are two images of the box in the garage, and the view from the attic directly above the box.

I'd like to avoid opening the drywall if at all possible. I was planning to run a fish tape or fish rod from the attic down to the box (or perhaps the other way around) after removing some knockouts from the box. Any advice on this? Seems like I'll just have to "get lucky" and find the knockout.

Since I'll only have access to one side of the knockout (from inside the box), and suggestions for strain relief or cable connectors to transition into the box?

Thanks for any help.


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Old 02-20-2012, 12:35 PM   #2
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Does removing the cover allow you enough room to remove a knockout and put a romex connector in there. If it does you could drill a hole on top and fish a wire down into the box. But I would want to try and look inside the wall to see how the wires are stapled first to make sure they are not stapled to where you are drilling.

There may also be a hole that is large enough for another wire in there.


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Old 02-20-2012, 05:30 PM   #3
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Originally Posted by rrolleston View Post
Does removing the cover allow you enough room to remove a knockout and put a romex connector in there...
Most of the time, I would use a connector designed to be installed from the inside of the panel. No need to fool with trying to install anything from the "outside" with one of those. Just knock out the hole, fish the wire in, and then snap the connector into the hole while threading it over the wire.

Like this one:

More information can be found here.

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Old 02-20-2012, 07:58 PM   #4
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You'll have a little issue w/ the insulation in the wall. What I usually do is knock out a ko. Run fish stick up to attic or down, but pref up. Tape on wire with connector. Fish down. Install lock nut. Done
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Old 02-21-2012, 06:17 AM   #5
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I would install a 15" spring access panel above the panel. That way you will have future access. About $15 at Home Depot plumbing department.
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