Mass has an amendment in 680 that requires "an insulated or covered equipment grounding conductor"
Anyone in mass have a sense of what "covered" means?
Is Romex a covered ground since it is in the sheath?
Asking regarding a hot tub that will require some snaking etc.
These are in the article 100 definitions of the NEC:
Conductor, Bare. A conductor having no covering or electrical
insulation whatsoever.
Conductor, Covered. A conductor encased within material
of composition or thickness that is not recognized by this
Code as electrical insulation.
Conductor, Insulated. A conductor encased within material
of composition and thickness that is recognized by this
Code as electrical insulation.