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Machine Frame grounding

Question asked by kevin_wood on Jun 17, 2020
Latest reply on Jun 19, 2020 by brianbaughman

A machine section has a 480V motor driven roll. The motor is grounded per 430.242. Under 250.110, I say the machine frame itself needs to be grounded but the electrician says no, that’s a NFPA 79 thing. I say machine sections need to be grounded or bonded.