Hey all,
I'm trying to wire in a smart home panel (basically a subpanel) to my house. Unfortunately the main power panel is outside, and the subpanel is for indoor installation only, so that's opened up a rat's nest of code compliance issues, cable derating, counting current-carrying conductors and having to add more conduits, conduit sizing, and everything else. I've tried several ways to plan this out and I keep running into various roadblocks, so I thought I'd ask you folks for a fresh take on it, if that's okay.
There are 12 circuits that will be moved over to the subpanel. Wire is 90c THWN-2, #2 for main power and circuit wire is all six circuits of 10-gauge and six circuits of 12-gauge (oversized for derating reasons). Wall is 6" thick.
Here's a pic of the main panel. All the main panel's knockouts are on the bottom, except for one on the left connected to the meter and a similar (unused) one on the right. Notice where the top of the window is; there's about 4" from the top of the window to the top of the wall, where the soffits begin.

Now in this photo, you can see a purple overlay of where I'm trying to mount the subpanel. It's basically just on the opposite side of the wall from the main panel, and the closest edge is left of the center of the main panel by about 36 inches.
And here's a shot of the desired interior mounting location:

Notice the top of the window -- that's the same window that was outside, but now there's about 14" of space up above it to the ceiling. This is due to the steep rake of the roof; the soffit is about 18 inches deep outside.
Seemed like it should be a relatively simple install originally. But there are several complicating factors.
1. You can't connect cables to the subpanel from the bottom or back, it can only be penetrated from the upper sides or the top.
2. The sides are between a stud (for the cabinets) and a window, so there's framing wood there that eats up some of those five inches on each side.
3. There's only about four inches above the subpanel's top before we reach the level of the outside soffit bottom
4. Moving the subpanel down is somewhat complicated by there being the existing light switch.
I'm happy to provide any more details or answers. Looking for new ideas and a fresh take since I've driven myself batty trying to figure this out. So - what's the recommended best practice for running the conduits for this situation? Thanks!
I'm trying to wire in a smart home panel (basically a subpanel) to my house. Unfortunately the main power panel is outside, and the subpanel is for indoor installation only, so that's opened up a rat's nest of code compliance issues, cable derating, counting current-carrying conductors and having to add more conduits, conduit sizing, and everything else. I've tried several ways to plan this out and I keep running into various roadblocks, so I thought I'd ask you folks for a fresh take on it, if that's okay.
There are 12 circuits that will be moved over to the subpanel. Wire is 90c THWN-2, #2 for main power and circuit wire is all six circuits of 10-gauge and six circuits of 12-gauge (oversized for derating reasons). Wall is 6" thick.
Here's a pic of the main panel. All the main panel's knockouts are on the bottom, except for one on the left connected to the meter and a similar (unused) one on the right. Notice where the top of the window is; there's about 4" from the top of the window to the top of the wall, where the soffits begin.

Now in this photo, you can see a purple overlay of where I'm trying to mount the subpanel. It's basically just on the opposite side of the wall from the main panel, and the closest edge is left of the center of the main panel by about 36 inches.
And here's a shot of the desired interior mounting location:

Notice the top of the window -- that's the same window that was outside, but now there's about 14" of space up above it to the ceiling. This is due to the steep rake of the roof; the soffit is about 18 inches deep outside.
Seemed like it should be a relatively simple install originally. But there are several complicating factors.
1. You can't connect cables to the subpanel from the bottom or back, it can only be penetrated from the upper sides or the top.
2. The sides are between a stud (for the cabinets) and a window, so there's framing wood there that eats up some of those five inches on each side.
3. There's only about four inches above the subpanel's top before we reach the level of the outside soffit bottom
4. Moving the subpanel down is somewhat complicated by there being the existing light switch.
I'm happy to provide any more details or answers. Looking for new ideas and a fresh take since I've driven myself batty trying to figure this out. So - what's the recommended best practice for running the conduits for this situation? Thanks!