Originally Posted by 5456Mich
Cornelius, Looks like a nice set up. How did you get the wires from the roof down into the basement ?
I used a hole in the roof that was previously made by "professionals" who installed a Winegard satellite dish for the previous owner. These guys drilled the hole at the edge of the roof where water collects, and caused a small leak. They also managed to hit a roof truss and the 12 volt line for the ceiling fan and air conditioner relay box...
When I removed the satellite dish (which I never used), and fixed the mistakes made by the installers, I installed a weatherproof electrical box over the roof hole with Dicor. No more leaks. Because I wanted to use the existing hole, I had to use a second junction box and conduit to protect the 4 gauge wire from the sun as it was about two feet from the solar panels.
Normally, one weatherproof box to connect the 10 gauge solar panel wires to the heavier 4 gauge wire would suffice. I would have made a hole near the center of the roof into the TV cabinet. From there the 4 gauge wires run into the basement compartment adjacent to the battery area.
Since you have a residential refrigerator, there is no refrigerator vent for you to utilize for running the wires, as is commonly done. My refrigerator is in a slideout, so I don't have a roof vent there either. Sometimes a holding tank roof vent can be used for running the solar wires down to the basement. If you decide to drill a hole in the roof for the solar wires, check, double check, and check again before drilling.
Running the 4 gauge wires from the roof, through the TV cabinet, and to the basement, along with making the plywood board with the solar controller, disconnect, and inverter were the most time consuming parts of the job. The solar panels actually installed on the roof fairly easily.