Does the ground wire count in conduit fill?
Yes. Every conductor in the raceway counts toward fill area, including equipment grounding conductors and the neutral, whether insulated or bare. Use the actual conductor area from Chapter 9 (Table 5 for insulated, Table 8 for bare) — the ground is not exempt, even though it is not a current-carrying conductor for derating purposes.
Answers
- How many wires can I put in a 1/2-inch conduit?
- What is the maximum conduit fill percentage?
- Does conduit fill include insulation thickness or just copper?
- What if my conduit fill is over 40 percent?
- Does a short conduit nipple really allow 60 percent fill?
- Do spare conductors count toward conduit fill?