What kind of wire do I need for a detached garage?

In general, you need 10-gauge wire for a 30-amp subpanel, 8-gauge for a 40-amp one and 6-gauge for a 50-amp subpanel. If you need a 100-amp subpanel, you’ll be running beefy 3- or 4-gauge cable with a 6-gauge ground wire. Voltage drop becomes an issue over distances in excess of 100 to 150 feet depending on cable size.

How do you hook up a subpanel to a detached garage?

Dig an 18-inch deep trench for the outdoor electrical wire, which you will run from the main panel box to the garage sub panel. Use 1 1/4-inch PVC conduit for a 100-amp sub panel or 1-inch PVC conduit if the sub panel is 50 amps or less. Run the conduit from the garage to the main panel box.

How do you size a sub panel for a garage?

Quote from the video:
Quote from Youtube video: If you have a 200 amp. Then i don't recommend going any higher than 100 amps out to the garage. Simply because you need power left over for your host.

What size cable do I need to run to my garage?

Assuming that you want the garage’s electricity to power light fixtures and a couple of socket outlets, a 6mm SWA cable should suffice.

How much power does a detached garage need?

If you’ve been wondering, “what size breaker box do I need for a detached garage?”. As I did in the past, know that the most recommended option for most cases is 50 amps. That’s not a categorical answer, though, since it’s perfectly fine to go up to 100 amps or even 400 amps in some cases.

Does a subpanel in a detached garage need a ground rod?

The detached structure is required to have its own Grounding Electrode System (GES) i.e. ground rods. The subpanel in the detached structure will have its grounds and neutrals separated.

Does a sub panel in a detached garage need a main breaker?

The subpanel may be equipped with a main breaker to allow for power interruption without having to go back to the main panel, but it is not required to have a main shutoff circuit breaker, since the feeder breaker back in the main panel serves this function.

How many amps does a garage sub panel need?

The average garage electrical panel size is a 60Amp 12/24 circuit panel. In most cases, this would run the garage door opener, most small shop welders, power tools, lights and would leave room for future circuits.

What does the NEC require for a detached garage?

At least one 120-volt, 20-ampere branch circuit shall be installed to supply receptacle outlets in attached garages and in detached garages with electric power. Code Change Summary: A new code section was added to require a 20 amp circuit for a dwelling unit garage.

How do you wire a new detached garage?

Quote from the video:
Quote from Youtube video: Always use a 12 gauge wire which is yellow in color otherwise your power tools will not work and use 20 amp circuit breakers only on the lights i use the 14 gauge wire which is white.

What size wire do I need for a 60 amp subpanel?

In short, the wire size for a 60 amp sub-panel 150 feet away is 3 AWG gauge wire.

How many amps will #6 aluminum wire carry?


Example: A 6 AWG aluminum wire has a rated ampacity of 50A. 80% NEC rule states that you can only load the wire up to 80% of the rated ampacity. That means that a 6 AWG aluminum wire can handle 40 amps of electrical current or less.

What size aluminum wire do I need for 100 amp service?

For 100 AMP service, you’ll need a #4 AWG copper wire or #2 AWG aluminum or copper-clad wire. Make sure to limit your voltage drop to 3% regardless of distance.

How far can you run 6 gauge wire on a 50 amp circuit?

Yes, a 6 gauge wire can definitely handle 50 amps. A 6 gauge wire will handle amperage all the way up to 55. You will find that most appliances use a 50 amp breaker.

How far can you run wire before voltage drop?

As an example, for a 120-volt circuit, you can run up to 50 feet of 14 AWG cable without exceeding 3 percent voltage drop.

For 120-volt circuits:

14 AWG 50 feet
12 AWG 60 feet
10 AWG 64 feet
8 AWG 76 feet
6 AWG 94 feet

What size wire do I need to run 300 feet?

for 300 feet for 100 amp rated service I would use Aluminum direct burial 1/0-1/0-1/0-1/0, the forth can be as low as #4 for the ground (but also in conduit, even if in conduit must still be rated underground wire and required by code also) Also note the size wire the breaker can handle, cannot cut strands to make fit,