- Berthoud, Colorado
- Journeyman Lineman / Distribution design and EC in my spare time
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'