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I just finished the NFPA70E 2021 online training. As far as I understand it the NFPA 70E is OSHA compliant but, I feel like the guidance between them disagrees when it comes to the shock hazard of DC batteries. I work with EV type battery systems 28V to 800 V so, this is important.
OSHA general industry standard 1910.303(g)(2)(i)
"Except as elsewhere required or permitted by this standard, live parts of electric equipment operating at 50 volts or more shall be guarded against accidental contact by use of approved cabinets or other forms of approved enclosures or by any of the following means: ...."
I see no exception listed for batteries.
in the NFPA 70E 2021 training they state shock protection is not required for battery systems where you cannot reach across 100 volts of potential and this is reinforced in the Informative Annex Figure F.7 (Assessing Hazards Associated with Work on Batteries).
Am I missing something?
OSHA general industry standard 1910.303(g)(2)(i)
"Except as elsewhere required or permitted by this standard, live parts of electric equipment operating at 50 volts or more shall be guarded against accidental contact by use of approved cabinets or other forms of approved enclosures or by any of the following means: ...."
I see no exception listed for batteries.
in the NFPA 70E 2021 training they state shock protection is not required for battery systems where you cannot reach across 100 volts of potential and this is reinforced in the Informative Annex Figure F.7 (Assessing Hazards Associated with Work on Batteries).
Am I missing something?
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