The Iceman
Senior Member
- Location
- Florida
I have a copper wire size and conduit quick reference table, and when you get up to and over 60 amps, the conduit size is larger with the grounding wire than without the grounding wire. For example 60 amps, 4 wire cu. calls for 4 #6, 3/4" EMT conduit, but 60 amps, 4 wire with ground cu. calls for 4 #6, and 1 #10 ground, 1" EMT conduit. I thought you don't count the grounding conductor for pipe fill. Can anyone show me what code I'm missing, or is this table wrong?