Wiring Outdoor Inverter to Indoor Battery

[JäseH]

My installer suggested my Sol-Ark 15K inverter go outside. My batteries will be in an Apexium box in the garage. I have one unused conduit line going from the panel to a covered plate outside. Can anyone point me in the direction of a wiring guide for the batteries? I know the wire is supposed to be in conduits, but what are the connections between the battery and the inverter supposed to look like on the interior and the exterior of the house? Is it just a junction box on the outside being fed through the conduit and terminating at the inverter? What type of connection should I employ to the battery box on the interior of the garage?

 

[JäseH]

Bump.

The Sol-Ark 15k has been installed and the bottom inlet panel is very crowded. Just waiting on the battery build and wiring now.

I have three, 300+ amp-hr battery boxes that I intend to wire in parallel to connect to my Sol-Ark 15k. The Sol-Ark is located on the exterior wall of my garage, and the batteries will be situated on the interior side of the wall. I purchased the HomeGrid busbars to tie each battery input together to achieve the max 275A current transfer using 4/0 cable. My plan is:

Inverter -> 4/0 > T-class fuse -> busbar -> 2/0 -> battery breaker -> battery terminals.

My question revolves around conduit for the 4/0 to Inverter connection. What type of conduit is appropriate for use in this application to traverse the brick and connect to the Sol-Ark? The knockouts on my Sol-Ark are very full. The easiest thing for me to do would be to have separate conduit for the positive and negative cables, but I prefer one penetration for the brick. Can I have each cable feed to a single junction box, then put a single penetration behind that junction box to the interior? Or should each cable feed to a conduit outlet, then traverse the brick siding separately?

I also have a Rasberry Pi and would like to run ethernet and power through the conduit (if permissible), so it needs to be sized to accommodate both 4/0, ethernet, and DC power cable.

Also, what is the best way to terminate the 4/0 on the interior? Cutoff switch? DIN Breaker or something else? My wife is very sensitive to aesthetics so I would prefer for the connections to be organized in appearance.