What grounding is required by a 24VAC temperature contro

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synergy1

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I need NEC references that talk about 24VAC grounding requirements. I have a smaller cabinet fed 24VAC ungrounded, just a hot and a neutral, by a large transformer that also feeds several other similar cabinets. My gut feeling is that they should be grounded but I can't find a reference for voltages under 50v. Any help would be appreciated.
 
Re: What grounding is required by a 24VAC temperature contro

try 250.20 (A) it may be what you seek


Charlie
 
Re: What grounding is required by a 24VAC temperature contro

250.20 States that any alternating-current systems operating below 50 volts shall not be grounded
(bonded) to the metal case. Also see were the article has exceptions.
 
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