I used flex conduit to provide UV protection to the solar cabling. The conduit is attached to the fiberglass roof with 3M5200.
* The grey tank has inlets from the shower, the bathroom sink, and the kitchen sink. When we went to pull the wires from the electrical chase to the kitchen cabinet, we discovered the top of the grey tank was wet. Turns out one drain had a hose clamp, one had a hose clamp that had never been tightened, and the kitchen sink one didn't have a hose clamp AND WASN'T EVEN ALIGNED with the tank port. Quality Assurance anyone???
The solar install has been fun. Time to do some more mods one of these days soon.