11/25/2023 0 Comments 60 amp aluminum wire sizeOr if you are SURE 60A is all you'll need and you want to go cheap-as-possible:ģx 4 AWG aluminum (hot neutral hot) + 1x 8 AWG aluminum (Ground) - gets about 6% drop but should still work, and will be less drop when not fully loaded. Use a 100, 125 or 200A panel at the shack (does not matter so long as it's "at least as big" as the feed breaker) and be sure to remove the bond and keep grounds and neutrals separated (grounds bond to the case, neutrals are isolated from the case.) You require both the grounding system at the "shack" and the grounding wire (connected to them) back to the main feed. Otherwise drive at least two ground rods outside, separated at least 8 feet. If the shack is "yet to be built" put an UFER ground in the slab or footing, and drive a ground rod outside. You need schedule 80 where it comes out of the ground anyway (unless you are running this overhead on poles - very retro but acceptable - subject to falling tree damage, though.) ![]() If you are careful about placing the conduit and filling the trench you can save a few bucks by using schedule 40 where it's fully buried - if you are not willing to put the effort into being careful about that, schedule 80 all the way may save you agony. If you might yearn for telephone, intercom, or internet or camera coverage, put in an extra conduit for communications lines. If there's any odds you might want even more power at some point, consider 2" conduit. ![]() Use 1-1/2" schedule 80 PVC conduit - trenches are expensive, conduit is cheap. That allows for up to a 100A feed - you may find some use for that, but it also allows for reasonable voltage drop at 50A and 300 feet. ![]() Subject to revision depending on your actual loads and how tight the budget is (cheap can be expensive later on, though) I would suggest:ģx 1 AWG aluminum (hot, neutral, hot) 1x 4 AWG Aluminum (but 6 AWG is technically acceptable if cutting it to the bone) Ground.
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