Latest Discussions : Electrical & Lighting

cwalters

10:44AM | 07/03/08
Member Since: 07/02/08
1 lifetime posts
I am on the brink of completing this project.....at odds of which size wire to use and not totally sure of the amps needed....roughly 65ft run from panel to panel...want to have 220 in garage just in case....have run 1" sch 40 pvc..and how big a panel in the garage? any and all info would be helpful

Tom O

05:20AM | 07/06/08
Member Since: 09/17/02
476 lifetime posts
Based on your conduit size, you can select either #6 or #4 copper THHN conductors for the 2 hots & 1 neutral with a #8 for the equipment ground.

The #6 is good for 65 amps and can be protected at 70 amps, th #4 is good good 85 amps and can be protected by a 90 amp breaker.

In either case, go with a 100 amp panel in the garage. At the garage panel, the neutral bus must be insulated (not in contact with) the sheet metal enclosure and you will need a separate equipment ground bus.

If the garage is not attached to the house, make another post & you'll get additional requirements for your installation.


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button

Anonymous

Post new button or Login button
Register