Running Electric Cable Underground

What kind of electrical loads will there be.

Running electric cable underground. At the garage repeat steps 3 through 7 to install the plastic conduit and cable. Extending electrical service to a detached garage or other outbuilding isn t much different than adding a circuit inside the house with one important exception running underground cable. Decide how much digging you re prepared to do which determines the type of wire you need to use. The codes shown are examples only and may not be current or accurate for your application or jurisdiction.

Go outside and lay the cable into the trench running it all the way to the garage. Steps to run power to a shed. Determine what the power needs of the outbuilding will be. If you are sufficiently confident of your wiring skills that you would feel comfortable adding an electrical circuit indoors then running a circuit to a.

From inside the basement pull the cable all the way to the main electrical panel. Running underground cables in metal conduits approved for buried cables is the most expensive method but also the one requiring the least digging. A second method 12 in. At the garage repeat steps 3 through 7 to install the plastic conduit and cable.

For a 6 in deep trench use galvanized rigid metal electrical conduit with individual conductors inside. Will it need 240v power or is 120v enough. This determines the size of the feed wire as well as the size of the new circuit breaker needed at the house s main panel. Secure the cable to the overhead joists with cable staples.

Secure the cable to the overhead joists with cable staples. From inside the basement pull the cable all the way to the main electrical panel. Go outside and lay the cable into the trench running it all the way to the garage. This shed needs 240v and 60 amps.

Electrical cable depth options. You may also run them at a depth of 4 inches under a 4 inch concrete slab. Underground wire for a residential circuit usually is installed with underground feeder uf cable which is rated for outdoor use and direct burial such an installation is typical when running a circuit to an outdoor location such as a garage shed or other outbuilding or to a yard light or water feature. Understanding the importance of proper underground wiring nec 300 3 all conductors of the same circuit including grounded conductors shall be contained in the same raceway cable or trench.

Deep direct burial of type uf underground feeder cable is another easy alternative. Deep pvc conduit method we show is about the easiest and most practical for running a typical 15 amp line.