Got called out on a service upgrade in Denver and the inspector was right

I was swapping a 100 amp panel for a 200 amp at a house off Colfax. Had the main shut off, everything looked good. Inspector pointed at the grounding electrode conductor and said 'That's a #6, you need a #4 for this service now.' I argued for a minute but he pulled out the code book and showed me the table. Had to re-pull the whole ground wire. Now I double-check conductor sizing BEFORE I even order material. Anyone else get tripped up by a grounding rule change?

2 comments

2 Comments

alexj9917h ago

Forget arguing with the book... inspectors always win. Seen that exact thing happen before.

riley_ramirez8119h ago

Yeah but that table can be tricky, I've seen guys get away with the #6 on a 200 amp.