3crkts./20A recept. & 3 crkts./gen. lighting in 6 offices. A desktop computer set-up in each.
1.How many neutrals & grounds in the homerun to a 3phase panel when considering the NEC & 6hots?
2.When a crkt. has a groundwire back to the panel. Is a grnd-pigtail to the metal box an add. NEC requirement for recept.,switches & fixt.?
Just want pull the correct amt. of #12's and ground properly to the new NEC.
Thanks!
