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Devices in Unoccupied Spaces #211229 09/27/13 11:09 AM
Joined: May 2010
Posts: 30
B
Bravo Offline OP
Member
Is it a code violation for put receptacles in a unoccupied spaces? I have air return chase plenums that are accessible but are classified as unoccupied.

Thanks in advance

Dean

2017 / 2014 NEC & Related Books and Study Guides
Re: Devices in Unoccupied Spaces [Re: Bravo] #211231 09/27/13 01:08 PM
Joined: Jul 2004
Posts: 9,575
G
gfretwell Online Content
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It has to be in a metal wiring method.
More important is what do you plan to plug in to that receptacle. You can only have equipment "necessary for their direct action upon, or sensing of, the contained air" (300.22(B))and I would want to see the listing. A cord is probably not going to be allowed unless it is plenum rated.



Greg Fretwell
Re: Devices in Unoccupied Spaces [Re: Bravo] #211239 09/27/13 09:13 PM
Joined: Apr 2002
Posts: 7,237
HotLine1 Offline
Member
dbravo:
If you proposed a compliant wiring method and what are the receptacles for?

I have seen a compliant receptacle installed for monitoring (testing) equipment use by service techs.


John
Re: Devices in Unoccupied Spaces [Re: Bravo] #211245 09/28/13 02:19 PM
Joined: Sep 2013
Posts: 43
MarkC10 Offline
Member
I'd think it would be fine .. FAU's up in attic spaces require a power source which are not meant to be use by any occupant .. as long as the power source is readily accessible for maintenance or service and conform to other necessary NEC guidelines as far as approved boxes,fittings etc .. really It just can't be buried or covered up.


Anyone claiming to know everything about Electrical, is wrong.
Re: Devices in Unoccupied Spaces [Re: Bravo] #211246 09/28/13 03:25 PM
Joined: Jul 2004
Posts: 9,575
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gfretwell Online Content
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"Unoccupied space" is not an issue in the NEC. They only address the physical concerns (environmental air handling space, damp/wet location, hazardous location etc).


Greg Fretwell
Re: Devices in Unoccupied Spaces [Re: Bravo] #211355 10/07/13 11:41 PM
Joined: Mar 2013
Posts: 46
NickD Offline
Member
"Rules" in this area are a bit fuzzy. Receptacles are "not permitted" in areas like the space above a suspended or drop ceiling, and yet, there are devices (condensate pumps etc) that are plug-in as OE, and they sometimes have to go into these spaces.

To answer the OP's question literally and directly, though, it is no code violation to put ANYTHING in an "unoccupied" space. As soon as the last person leaves a room... it becomes an "unoccupied space". wink

Last edited by NickD; 10/07/13 11:47 PM.

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