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#196387 - 09/29/10 10:13 AM Dedicated space
SJT Offline
Member

Registered: 07/24/02
Posts: 242
Loc: PATCHOGUE, N.Y.
There is a brand new job where there is a 4 foot wide Duct ran above switchgear. The way we are reading 110.26(F)(1)(a)says that no Foreign systems are allowed in the 6 foot space above the equipment. The NEC uses the words "shall be dedicated"to the electrical installation. The question is when you see the words "shall be", that means there is No changing that rule. We are going to tell the Design person of this job that there are No options when it deals with Dedicated space. Comments? Thanks - Good Day

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#196388 - 09/29/10 11:16 AM Re: Dedicated space [Re: SJT]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9045
Loc: Estero,Fl,usa
I don't really see any relief, particularly in new construction. They can pull it away from the wall, out beyond the depth of the switch gear and be compliant.
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Greg Fretwell

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#196390 - 09/29/10 04:38 PM Re: Dedicated space [Re: gfretwell]
ghost307 Offline
Member

Registered: 05/09/05
Posts: 884
Loc: Chicago Illinois USA
The wording is from the floor to 6 feet above the equipment or up to some type of structural ceiling.

We had a similar situation with tons of foreign piping above the gear in a job in downstate Illinois and they installed a concrete slab below the gear and the piping. The AHJ said that a suspended ceiling or drywall wasn't acceptable, but he would accept something "that you could walk on".

BTW, be glad that you're not in Chicago, where the space isn't just above the equipment, but also above the working space.
smile
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#196393 - 09/29/10 05:19 PM Re: Dedicated space [Re: ghost307]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Ghost:
Who made that call? The electrical AHJ, or the Building AHJ?
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#196395 - 09/29/10 07:49 PM Re: Dedicated space [Re: HotLine1]
SJT Offline
Member

Registered: 07/24/02
Posts: 242
Loc: PATCHOGUE, N.Y.
The Electrical AHJ. The job is a union job. It's a major mistake on the builders part.

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#196399 - 09/30/10 07:46 AM Re: Dedicated space [Re: SJT]
ghost307 Offline
Member

Registered: 05/09/05
Posts: 884
Loc: Chicago Illinois USA
It's in the actual text of the Chicago Electrical Code.

"Dedicated Electrical Space. The space equal to the width and depth including working space of the equipment and extending from the floor to the structural ceiling shall be dedicated to the electrical installation. No piping, ducts, or equipment foreign to the electrical installation shall be located in this zone."
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#196403 - 09/30/10 12:35 PM Re: Dedicated space [Re: ghost307]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Thank you gentlemen
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#196463 - 10/06/10 06:37 AM Re: Dedicated space [Re: HotLine1]
harold endean Offline
Member

Registered: 02/16/02
Posts: 2248
Loc: Boonton, NJ
I have seen a job where the only place to put some piping was directly over the service panel. The only way around it was to install a drip pan to prevent and condensation from dripping on electrical panels.

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#196466 - 10/06/10 11:46 AM Re: Dedicated space [Re: harold endean]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9045
Loc: Estero,Fl,usa
You had to 90-4 that if it was in the 6 foot dedicated space.
There is no code language to support the variance.
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Greg Fretwell

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#196467 - 10/06/10 12:18 PM Re: Dedicated space [Re: gfretwell]
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5305
Loc: Blue Collar Country
A job I did a few years back made me pause to think for a moment ...

How often do we find that plumbing, HVAC, and all manner of building components intrude upon "our" space? Then there is the matter of stuff being stored in the 'working space.'

Yet ... in the same building where they just can't keep stuff out of the electric room .... ever notice how the room for the elevator equipment is kept clear? No HVAC, no file boxes, and even the maintenance guy hasn't set up a desk in there.

I wonder why that is ... could the annual inspection have something to do with it?

Along the same lines ... if the offending pipe is part of the fire sprinklers, NEC is overridden by the sprinkler code. Likewise, there are limits as to how much a plumber can move a drain.

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