SER connector type question

[wcp0611]

I'm in the late stages of an addition we are building onto our house. Long story short, I've got to cut a new 1.5" hole in the back of my main disconnect outside and feed #1AWG/3 SER through it, the exterior plywood, then up the studs, over some ceiling joists about fifteen feet and drop it down into a subpanel in a closet. The interior is unfinished until I get electrical passed by codes and can move forward with the insulation and drywall. That's the gist of my project. The question is after I knockout a 1.5" hold in the outside panel and sheathing what connector can I use that won't require me to unbolt the panel and pull it away from the outside wall? I've used the standard two screw clamps before but I can't see them working here if I can't pull the panel from the wall.

 

[Norcal]

I'm in the late stages of an addition we are building onto our house. Long story short, I've got to cut a new 1.5" hole in the back of my main disconnect outside and feed #1AWG/3 SER through it, the exterior plywood, then up the studs, over some ceiling joists about fifteen feet and drop it down into a subpanel in a closet. The interior is unfinished until I get electrical passed by codes and can move forward with the insulation and drywall. That's the gist of my project. The question is after I knockout a 1.5" hold in the outside panel and sheathing what connector can I use that won't require me to unbolt the panel and pull it away from the outside wall? I've used the standard two screw clamps before but I can't see them working here if I can't pull the panel from the wall.

Only way would be to install the connector from the inside of the panel, which is a method I don't care for personally.

 

[mm08822]

Take a pic with front cover removed and one from the side.

 

[wyliesdiesels]

 

[sparky 1971]

Romex connector into a rigid coupling, connected to the disconnect with a chase ******. The depth of the rigid coupling should be enough to get the connector inside the wall where you can access the clamp screws. If not, use two couplings with a close ****** between them.

https://www.homedepot.com/p/Halex-1-1-2-in-Rigid-Chase-Conduit-******-07015/100170296

1-1/2 in. Rigid Conduit Coupling

Halex 1-1/2 in. Non-Metallic (NM) Twin Screw Sheathed Cable Clamp Connectors 05115 - The Home Depot

Get the Halex 1-1/2 in. Twin Screw Non-Metallic Sheathed Cable Clamp Connectors (5-Pack) 05115, maintains grounding fix non-metallic sheathed cable and flexible cord to steel outlet boxes or other metal

www.homedepot.com

https://www.homedepot.com/p/Halex-1...31oKQGifbsgoSk9FG8waApg7EALw_wcB&gclsrc=aw.ds