Originally Posted by Virginhomeowner
My father-in-law says I need to get the garage wired to install an electric garage door opener, several outlets, lights inside and security lights outside. I don't think this is all necessary but he's paying for it so I'm going along with his master plan. I have a few questions and concerns:
1. Do I need a permit?
2. How far underground does the wiring need to be?
I've dug a 18 inch deep trench 20 feet from the house to the garage but encountered drainage pipes. The trench goes through an area where there is gravel and Tyvek for drainage, some sort of pipe that I dug through and another pipe that is 1 foot underground that I decided to leave alone.
3. Is it okay to run the underground wire through this?
4. Do I have to continue digging under the third pipe to get to an 18 inch depth?
If you run your wire in PVC conduit, which is probably the best way to go, you need 18" of cover. Which means probably about a 20" deep trench. Any given point along the entire conduit must have 18" of ground cover over it.
Oh, and ALWAYS
call to have underground utilities marked before you do any digging. Not only because digging into a buried electric/gas line will kill you dead, but also because if you don't call, and you damage some utility pipes or wire, it could cost you hundreds of thousands of dollars. Not sure about where you are, but here in MN it's free to have them come out and mark all the utilities buried on your property.