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How to Wire a New Garage Project
Wiring a New Garage and Planning the Circuits : This contains all the basic electrical circuit requirements for the proposed garage…
Electrical Wiring for a New Garage
Home Electrical Question: I have a new post garage. It’s of pole construction, sided and roofed with metal panels. I plan on insulating and sheet rocking it.
I need a plan to wire it. I have some experienced wiring helpers to deal with the digging and actual wiring. I know how to run wire through walls and underground. I have 200 amp service. I have 4 “bays” for breakers under my meter. I have 2 phase service. I think I want to install a sub panel (this would be sub panel No. 1). Connected to this sub panel is the hot tub (it is wired through sub panel No. 2 further down the line) with 2 circuits (20 amps each), 1 is an out door outlet used on the BBQ.
The other powers a lighting circuit in a shed. The shed and outlet were wired by a full time electrician. The shed and hot tub sub panel would be serviced though the aforementioned sub panel (No. 1) through a 50 amp breaker. The garage will have 1 220 VAC outlet (30 amp 220 VAC Small dryer style plug outlet)to service a compressor and a 220 VAC welder. Each of these do not draw more than 30 amps each. I plan on installing only 1 220 VAC outlet to service this equipment, so that both cannot be operated at the same time. I will have 9 110 VAC outlets around the perimeter of the garage with the possibility of adding 4 more in a possible expansion at some date in the future.
I will have Florentine lighting overhead, 3 or 4 rows of 5 each 4′ 2 tube fixtures. There will be a garage door opener, hard wired or plugged to an outlet in the stringers (this is included in the outlet count above. there will be a 110 VAC LED light by the man door and an 110 VAC LED area light above the roll up door. I Think I can do this with 100 amp breaker in the No. 1 sub panel to the garage (wire run underground through 1.25″ conduit) w/ copper wire to a breaker box rated at 100 amps with a main (100 amp)breaker.
I have a fused disconnect for the welder and compressor that would be hooked up to a 50 amp breaker in this Main (sub panel No. 3?) panel. The wall outlets would be GFI protected from the first outlet down stream to the end, I think this should be divided into 2 separate circuits. The overhead lighting should be 2 desperate circuits too. The local inspector told me I need 2 grounding rods hooked up to the box and 4 wire service from the No. 1 sub panel to the garage. The pic is my MAIN under the meter I get 220 VAC with a tandem breaker in the middle; leaving 1 single space on each side.
This home electrical repairs question came from: Doug, from Port Orchard, Washington
Additional Comments: Nice site, easy to get around!
Thanks for your Home Electrical Question Doug.
Electrical Wiring for a New Garage Project
Planning Circuits for a Garage
This question contains all the basic electrical circuit requirements for the proposed garage project. The exact circuits will depend on the electrical load required for the equipment and the devices that will be connected or used. The electrical circuit schedule and plan should be drawn out and submitted for to the building department for approval.
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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.