olly
Senior Member
- Location
- Berthoud, Colorado
- Occupation
- Master Electrician
I am hoping someone could help as I dont have my code book with me. I need to know what size wire AL or CU is needed for a 125A service to a barn. And since it will be in conduit not URD so would THHN AL be okay or is it a better practice to go with copper conductors? The service length is 140'