![]() Breakers and a surge-suppressor are installed in the subpanel, and the shed is wired using typical interior wiring techniques.The ground and neutral wires attach to their respective terminals, and one hot wire connects to each bus bar.A separate ground rod is driven into the earth outside the shed, and the ground terminals connect to it. In the sub-panel, the ground and neutral terminals are separated, unlike the main panel in the house where they tie together.With this heavy-gauge wire, special connectors with screw-clamps are used. The individual wires from the conduit are joined to the same gauge non-metallic sheathed cable because it’s easier to run inside the shed to the new sub-panel. Inside the shed, a junction box is affixed to the conduit where it comes through the wall.All the wires are heavy, 6-gauge to supply the required 60 amps. Here, because it’s a 240v circuit, two 120v conductors, one neutral, and a ground are tied to the rope and pulled through the conduit. In conduit, code requires the use of individual conductors rather than sheathed cable (typical house wiring where two or three conductors plus a ground wire are wrapped together in an outer shell).With the fish tape through the conduit, Scott ties ¼ inch rope to the fish tape’s end and pulls the rope back to the far end.Here, it’s useful to have a helper, in this case the homeowner, to know when the fish tape arrives at the far end. The first step in getting the wires into the pipe is to run an electrician’s fish tape from one end to the other.With some grass seed, mulch straw, water, and time, the excavation will blend back into the lawn. With all the conduit installed, the trench is backfilled using the dirt that came out of it.In one spot where the trencher encountered ledge and couldn’t dig deep enough, a 2 inch thick layer of concrete is placed over the conduit, sand, and caution tape.On top of the sand, Scott lays red caution tape to alert anyone digging here in the future that there’s underground power. With all the conduit laid in the trench, it’s covered with a protective layer of sand.Once the conduit cools, the new shape is permanent. ![]() ![]()
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