I am wiring a metal framed warehouse. It has an outdoor meterbase and panel box. The warehouse has a few wood framed offices. I plan to run the HVAC, and 20amp general lighting circuits from the outdoor panel box through EMT conduit to the office area. My largest circuit would be for the central heat. So a #6 is my largest wire. Above the office area I plan to put a splice box where I would convert from the emt conduit, and thhn wire to romex.
Could I run a single #6 grounding wire through that same emt conduit from the panel box for the equipment grounding conductor, or would I need to run an individual grounding wire for each circuit from the panel box.
Could I run a single #6 grounding wire through that same emt conduit from the panel box for the equipment grounding conductor, or would I need to run an individual grounding wire for each circuit from the panel box.