I need to install a circuit breaker and a few outlets on a container made with sandwich panels.Are there any special equipments or materials for the job?
This is a tough one. You may have to use 2X4's to extend the wall inwards to allow for it. I attached a link that might help.
You will need to use surface mount materials that can be screwed or bolted to the sandwich panels. Most electrical distribution centers have surface mounting options. For wiring, you will need to use conduit (PVC, EMT, or flex), metal clad cable, or wire mold. Surface mount junction boxes for devices need to be compatible with your choice of wiring method.
