Wire Type inside Pole Barn

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th111447

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What is the correct type of wire to put "inside" an enclosed pole barn for lighting and plugs? Does code require UF cable or can I use regular NMB 12-2? Does it have to be in conduit?
 
That depends if the pole barn is classified as a Agricultural Building in accordance with Article 547.

Take a look at 547.5 for the allowable wiring methods for an agricultural building.

Chris
 
If building is just classified as an accessory building by the building depart which is the case most of the time NM or UF cable can be installed but both will require protection unless routed in 2X4 or 2X6 stud walls
 
What is the correct type of wire?
jwelectric said:
Use electric wires?hee, hee, hee, hee, hee, hee,
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Now that's damn funny.....

Bea said:
If building is just classified as an accessory building by the building depart which is the case most of the time NM or UF cable can be installed but both will require protection unless routed in 2X4 or 2X6 stud walls
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Not to sure that you could use either. Since the OP stated that it was a pole barn (it can not be attached to a dwelling unit unless that dwelling unit had the same type of foundation: poles. I doubt it. Since this is more then likely is a detached structure and one that probably doesn't meet the definition of a dwelling unit......I would have to say no to UF and no to NM...

I would also go out on a limb to say the the OP just simply wanted to know the location type of a pole barn, wet, damp, or dry........But this is still my answer.:D

Jim
New Hampshire
 
volt102 said:
......I would have to say no to UF and no to NM...
Jim
New Hampshire
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Why would you not use UF. I just put a service on a pole type structure and the Inspector insisted on UF with dust proof fittings.

What would you use to wire this?
 
1793 said:
Why would you not use UF. I just put a service on a pole type structure and the Inspector insisted on UF with dust proof fittings.

What would you use to wire this?
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A pole barn with a place to install the cables concealed behind a 15-minute finish rating?

Now don't get me wrong, there may be such a thing, but up here in NH, I haven't seen one yet.

Jim
New Hampshire
 
volt102 said:
A pole barn with a place to install the cables concealed behind a 15-minute finish rating?

Now don't get me wrong, there may be such a thing, but up here in NH, I haven't seen one yet.

Jim
New Hampshire
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Please don't get me wrong I'm not a confrontational kind of guy but why would this pole barn be any different than an unfinished garage or basement wired in NM?

I'm here to learn
 
The 15 minute flash covering is a building code issue, that may not apply.

It is up in the air whether a pole barn is a damp location. I happen to own a very dusty dry unheated pole barn, which I am not ashamed to report is wired in NM cable. Wiring in dwelling unit crawl spaces is most often NM cable.
 
I started a thread about this subject a few moths ago.
1793 said:
Please don't get me wrong I'm not a confrontational kind of guy but why would this pole barn be any different than an unfinished garage or basement wired in NM?
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It is very different in some ways, very much the same in others.

The buildings construction type...A detached garage is not a dwelling unit.

Do I like it... No. Have I approved the installation of such... Yes. My building inspector has interpreted(or twisted) our building code in a way to view a detached structure that is an accessory use to a residential dwelling unit just that, part of a dwelling unit.

However, The code does prohibit NM and UF in a detached garage/pole barn/pool shed/shed and all the other accessory structures that do not meet the definition of a dwelling unit.

With all that being said...Gotta do something about this in the 2011....

Jim
New Hampshire
 
volt102 said:
However, The code does prohibit NM and UF in a detached garage/pole barn/pool shed/shed and all the other accessory structures that do not meet the definition of a dwelling unit.
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I must have a bum copy of the code. It doesn't say that at all in mine.
 
iwire said:
It did not used to, if you look hard it does now.

I think it is a bad change.
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HOLY SMOKES! How did I not see that? How did both '05 code change classes I attended fail to mention that? That's a biggie. I'm still floored by that revelation.
 
mdshunk said:
I must have a bum copy of the code. It doesn't say that at all in mine.
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Think about a detached garage, pole barn, etc... then take a look at 334.10 under uses permitted.
(1)One- and two-family dwellings.
Is this one or two family dwelling? Take a look at definition of such.

Dwelling, One-Family. A building that consists solely of one dwelling unit.
Dwelling, Two-Family. A building that consists solely of two dwelling units.
Dwelling Unit. A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.

Is this a dwelling? No....Then look at 334.10(2)Multifamily dwellings permitted to be of Types III, IV, and V construction except as prohibited in 334.12.

It wasn't a one or two, It definitely isn't a multi...

So that leaves us with 334.10(3)

(3)Other structures permitted to be of Types III, IV, and V construction except as prohibited in 334.12. Cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of material that has at least a 15-minute finish rating as identified in listings of fire-rated assemblies.

It must be an "other"... One that if I put NM in it, it must be concealed behind that 15 min finish....

Jim
New Hampshire
 
Seems to be a lot of debate on what wire to use. I'll call my inspector tomorrow and see what his recommendation is.
 
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