jea48 said:
One equipment grounding conductor. (Note: If a steel conduit is used between the main panel and sub panel that meets NEC for use as an equipment grounding conductor.)
That's a surprise! We can't do this for junction boxes or outlets.
Yes you can. NEC 250.118 (2) (3) (4)
The equipment grounding conductor run with or enclosing the circuit conductors shall be one or more or a combination of the following:
- A copper, aluminum, or copper-clad aluminum conductor. This conductor shall be solid or stranded; insulated, covered, or bare; and in the form of a wire or a busbar of any shape.
- Rigid metal conduit.
- Intermediate metal conduit.
- Electrical metallic tubing.
- Listed flexible metal conduit meeting all the following conditions: