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In a few days, we will be having a small tower set up so that we can have internet connection in our rural home. We need to trench a cat-5 cable from the tower to our house but we also want to, in the same trench, run a power line out there so we are able to go farther with electrical items such as weed-eaters. What I wish to know is, how far down should the power cable be from the cat-5 as to not interfere with data signals? Both cables will be in separate conduits.