- Joined
- Oct 15, 2013
- Messages
- 300
So I am currently upgrading my electrical service in my garage/shop.
Previously what I had in the garage was 120V only. There was a simple dis-connect switch to control the lights and outlets. There is a 10/3 cable dug underground running from the main breaker panel to the garage. This cable has NO ground wire in it (wasn't important in the 50's..) Yes, I am just plain lucky that I have never had anything short out in the years I've lived here!
I am installing a basic sub-panel in the garage now so I can have 220V power on breakers. My dilemma is that I have no ground connection with the main breaker panel. Am I correct in thinking that I must run a ground wire back to the house, and connect to the ground bus in the main panel? I plan to place two earth ground rods in the process.
I think I know the answer but am hoping for a qualified opinion on this.
Thanks!
Previously what I had in the garage was 120V only. There was a simple dis-connect switch to control the lights and outlets. There is a 10/3 cable dug underground running from the main breaker panel to the garage. This cable has NO ground wire in it (wasn't important in the 50's..) Yes, I am just plain lucky that I have never had anything short out in the years I've lived here!
I am installing a basic sub-panel in the garage now so I can have 220V power on breakers. My dilemma is that I have no ground connection with the main breaker panel. Am I correct in thinking that I must run a ground wire back to the house, and connect to the ground bus in the main panel? I plan to place two earth ground rods in the process.
I think I know the answer but am hoping for a qualified opinion on this.
Thanks!