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Unread Yesterday, 11:18 AM   #1
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Electrical engineer

I would like to verify if NEC allow to use wall mounted occupancy sensor In ELECTRICAL closet (did not find in NEC Art 410. Thanks
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Unread Yesterday, 08:02 PM   #2
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Re: Electrical engineer

Welcome to the forums. Please post this in the electrical forum. You'll get more feedback there.
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Unread Today, 11:48 AM   #3
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Re: Electrical engineer

Why would you want to put one in there ?
Are you trying to hurt/kill someone ?
Think about working on/near an energized point of contact and the lights go off while you are doing it.

NEC 110.26 (d) Illumination. Service equipment, switchboards, and panelboards, as well as motor control centers located indoors must have illumination located indoors and must not be controlled by automatic means only.
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Unread Today, 11:51 AM   #4
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What is your concern?

If someone wants to know if an electrical closet is occupied or not, why would the NEC care?

Oh wait, are you talking about a light that's controlled by a motion detector? I could definitely see how that could be a bad idea in an electrical room. Not good.

I once had to work on a shipping container that someone turned into a walk-in freezer to be used at a state fair. One of the concerns I had with this thing (out of many) was that the light switch was a 15 minute timer knob. I figured that if someone was inside when the time expired, it could be a scary situation.

Most, if not all modern walk-in coolers/freezers have a glow-in-the dark door latch on the inside to help someone find their way out if the lights were to go out, as well as a latch that can be easily be taken apart to prevent someone from getting locked inside. This thing had neither of those things.

Sorry, I don't know what the code says, but I agree that a motion detector controlled light in an electrical room is not good.
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