I am building a pole barn about 200 feet from my house. I would like to run 90amp or so 240VAC to a subpanel, as well as ~400VDC from solar panels, and a pull or perhaps two of Cat5e ethernet cable.
The 240VAC will go to a subpanel in the pole barn, and will be 4 conductor (L1, L2, N and G). The subpanel will also be tied to a ground rod at the pole barn.
The 400VDC will likely be 3 pair, and will go from solar panels to inverters at the house, which tie into an existing grid connected solar system.
The ethernet will have two runs, mostly for redundancy. I only need one. I have considered running more, but a better solution might be to put a POE switch in the barn, and use POE to run cameras.
Each group of lines would run in their own conduit. I will try to keep the ethernet conduit away from the others in the trench.
I am considering using aluminum wire for the 240VAC and the solar, for cost. I would probably want to try to go with copper for the solar, since it would frequently cycle between maximum power and no power more often than the 240VAC.
Is 10" suitable separation for the Cat5e? Any other suggestions?