rszimm
Member
- Location
- Tucson, AZ
Doing a 200->400A upgrade. There's an existing UFER ground wire that's #4 coming into the panel that runs right into the footer. My reading of NEC seems to state that #4 is fine for UFER ground, but 250-66 seems to indicate that I need #2 (350 kcm service wires). Which is correct?
Also, was told that the local town won't accept a UFER ground on a panel upgrade because they can't see that the part inside the footer has been done properly, so it might be a moot point.
Also, was told that the local town won't accept a UFER ground on a panel upgrade because they can't see that the part inside the footer has been done properly, so it might be a moot point.