Adding a 60amp sub panel (4breakers) on the 2nd floor for a dehumidification system and some misc. Running 100 feet of 6/3 wire. I am assuming that I can use the ground wire in the 6/3 from that sub panel ground bar to the main panel ground bar. This is not in a separate building so I don’t think NEC requires grounding rods.
And if so does anyone know the limitation on the length of a ground wire if indeed a separate one is required for the panel itself. Washington country Maryland.
Electrical – 60 amp sub panel, 100 ft away from main panel. Grounding rod or not
electricalelectrical-panelgrounding
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Best Answer
Same building, just supply ground and neutral in appropriate sizes and separate, and be sure that ground and neutral are not bonded in the sub-panel.
6AWG copper (as a cable, which typically limits you to the 60C rating...) is maybe pushing it a bit depending how loaded that 60A panel is.