Running conduit in wall to existing panel

[Jeff590]

So I finished up the wiring in the detached garage and now I need to run the conduit and pull the wire. Using 1¼ conduit and running it to an existing panel in the house. Since the existing panel is in a visible part of the house, I do not want to run the conduit to the back of it, but want to run it lower through the siding, and then up to the panel. There will be an LB on the outside, but how do I make the transition in the wall?

I was thinking of using something like this and leaving it exposed – is that the best/proper way to make the transition inside the structure? There are no knock outs in the back, which I would need, so I’m wondering if I have the right thing or not.

 

[tfi racing]

Just go directly from the LB into the back of the panel,or is the space inside your panel too limited to allow that?

 

[matt_i]

As TFI racing says, its much simpler if a piece of conduit can go straight at a knockout in the back of the panel. Whether you have that knockout or not, you can holesaw one near the bottom corners. Take appropriate action and disconnect power before working inside a live panel...the OD of the conduit is going to be slightly larger than the male threads, most definitely so if using PVC conduit. In this case as soon as the back of the panel is "holed" then I would continue to drill a pilot hole with a small dia long drill bit, lets just say 1/8" - 1/4" dia, on the same centerline which goes all the way thru the outside wall. (Good idea to purposefully angle this pilot hole purposefully downward a small amount to aid in weatherproofing...iow don't want water running downhill to the back of the panel due to slight error the other way with hole centerline tilted Up). Now you have a pilot hole to guide your holesaw coming back from the exterior side. Assume the inside of the wall is fiberglass or other insulation you can carefully cut out, being mindful of the potential for NM wires run inside the stud cavity.

Usual prep for weatherproofing, glue the conduit, tighten the ring and you're off and running.

 

[Fishingfoolemjak]

Another option.... pipe up and into a pvc jbox on the outside of the house and attached to the house. Out of the back of the jbox, run romex (or ser depending on wire size) inside wall and enter into the bottom of the panel. If there is no proper ko, use a ko punch or hole saw, and be sure to install a romex connector with bushing.

 

[rburke65]

You should use a conduit ****** between thr LB and the back of the panel.