Home > categories > Hardware > Wire > wiring a garage?
Question:

wiring a garage?

what size of wire do i need and is the new fuse box/trip box kept in garage.or where can i get wiring diagrams from

Answer:

You will have to get a permit before you start work. It all depends on the power you want out in the garage. If you want to run one 120V circuit, then you'll need to run #10 since it will be a long run to the garage from the house. You will also need a disconnect somewhere where the power comes into the garage. You may want to get a licensed electrician on this one. You don't want to have a fire or someone killed by shock and have the insurance deny the claim because it was faulty wiring and wasn't inspected and authorized. good luck.
Depends if you plan on running welder or welders,lights of course and an air compressors,you requir 220 to 240 volts,the breaker box should be in your garage,now go to the welding store,or tractor supply and get 10 gauge wire,might as well get a small spool of it cause you're gonna need it,depending on the size of your garage,i own my own auto body shop and my 8 employes are either welding or running the air compresers to shoot a car,now my shop can hold 6 cars maximum inside,others stay out side,+ they're under constant survalance watch,along with the shop and my office,so theres more power being drawn there to,my electric bill is around $1,900 a month,give or take,find someone that knows what they are doing a bit with electrical work,a buddy or something,it's hard to say what it would cost with not knowing what your garage will be used to do.
Lots of wrong answers. Don't take electrical advise from untrained and unqualified people. Is the wire overhead or direct buried? Either way, there are underground rated, direct burial, splice kits made that will splice the wires without the need for a box. They are a set screw terminal aluminum tube with 2 pieces of heat shrink tubing. Buy them at a electrical supply warehouse. One for each conductor. Tell them what you are doing so you get the correct ones. They must be rated for wet locations. So must your wire. I assume you are using a XHHW type wire for direct burial or a THWN for inside buried conduit? Your number 3 copper wire is large enough for 100 amps with no problem at 100 feet. Article 310.16 for the rest of you. You will need to drive a ground rod at the garage and connect it with a number 6 copper wire, and bond the neutral and ground together in the panel the same as in your house. You will need to do this before January 1st when the new national electric code takes effect. In the 2008 code you will need to run a 4 wire feeder to the sub panel in the garage. Your installation will comply with the 2005 National Code. State and local codes may vary. If you need more help, email me.
Home supply stores sell books with instructions for wiring projects. In North America, install two additional branch circuits; use 12 gauge NM-B wire for outlets (remember to put a GFI as the first outlet on the network), with a 20 amp breaker; use either 12 or 14 gauge wire for lighting circuits. (Use a 15 amp breaker if you use 14 gauge.) The feeder cables get run from the garage to the main breaker box; if there isn't room for two additional breakers there, replace a couple of the existing breakers with duplex breakers.
depends on what you want to do. the best thing to do is get the local building codes for your area and make sure you meet all the requirements. 14/2 is a good wire easy to use for 110v. Outlets, light switches. ect.

Share to: