Sub-Panel Wire Size and Conduit Questions
So I'll use #8 green for my ground to the main panel. I'd rather spend the extra $10 and be sure it's large enough then risk having to change it after. Better to be a size to big then a size to small.
For the #6 to the ground rods can I strip the insulation off the leftover pieces of #6 and use that? I only have to go a few feet so it's not a big undertaking like trying to strip 120' for the run to the main panel.
Unless someone knows for sure I'll ask the electricians about depth the next time I see them. We put water at min. 48" and gas at min. 32". Our frost line is realistically 10"-12" so it should be safe at 18". I'll have to ask and find out for sure though.
The conduit will come up the wall about a foot. It will be located in an area where the risk of damage is next to nothing. It will be in an ivy bed that sees no traffic. The house end will come in underground.
The wire type is THW which can be used in buried conduit. I'm going to use 1-1/4 conduit so if I ever want to up it to #4 and a 100amp breaker I don't have to dig again.
Yes, I have water separators and filters on my air lines already, that's a must for painting. It's a pain to roll out 100' of air hose and put them away again every time I need air in the house or front driveway. I also want to eventually put the compressor in a separate shed and pipe the air into the garage, then to the house, then to the driveway. That's a whole different project though. My concern was just about them sharing a trench. I know we've done it with gas (36") and electric (18") and passed inspection so I don't see why an air line would be different.
Last edited by Tmb9862; 12-03-2009 at 12:54 AM.