Service to Horse Barn

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davelectric

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I will be installing an underground service to a a Horse Stable per 547.5 (A) in Rigid Non Metallic Conduit. Being this is a service from the Utility Co. pole and not a feeder in which I will have a Grounded Circuit Conductor and not an Equipment Grounding Conductor per 547.5 (F). Are the SE conductors permitted to be Aluminum?
 
Thanks guys I appreciate the input.
Thats the way I saw it, but the inspector mentioned copper conductors then I was doubting my interpertation.
 
I see that FPN but thats under Equipment Enclosures,Boxes etc.(not wiring methods) The panel will be located in the tac room isolated from livestock, but not the vapors. So I see your point
I was going to use EMT overhead with compression fittings (Steel or die cast)? Which has a better corrosion resistant property? It seems PVC would be the best for the atmospheric conditions.
 
EMT is not a listed wiring method for agricultural buildings. I'd definately go with PVC. Looking a little further into 547.5, (F) says the EGC must be copper. 547.9 (D) also mentions this. I assume the other conductors could be AL.......including the service entrance conductors in your case. I wonder why the CMP just singled out the EGC to be of copper???
 
A/A Fuel GTX said:
EMT is not a listed wiring method for agricultural buildings.
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Please show me where it says this.

For the record, we do work at a very large dairy, all steel buildings with lighting runs done in emt.

EDIT: I've also done a horse barn in emt too.
 
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In looking at 547.5, EMT is not mentioned as a wiring method. The wiring methods of 502 Part II are allowed but that would be RMC or IMC. Maybe the verbage "or other cables or raceways suitable for the location, with approved termination fittings" would allow EMT:-?
 
davelectric said:
I will be installing an underground service to a a Horse Stable per 547.5 (A) in Rigid Non Metallic Conduit. Being this is a service from the Utility Co. pole and not a feeder in which I will have a Grounded Circuit Conductor and not an Equipment Grounding Conductor per 547.5 (F). Are the SE conductors permitted to be Aluminum?
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One other note, the utility (REA) in my area requires copper service conductors for some applications (maybe all, I dunno). The inspector might have been mentioning that as well.
 
davelectric said:
I will be installing an underground service to a a Horse Stable per 547.5 (A) in Rigid Non Metallic Conduit. Being this is a service from the Utility Co. pole and not a feeder in which I will have a Grounded Circuit Conductor and not an Equipment Grounding Conductor per 547.5 (F). Are the SE conductors permitted to be Aluminum?
Click to expand...

An interesting question,.. I do not see the language that would prohibit Aluminum as service entrance conductors,..
 
dreamsville said:
Sure. Hellavu lot cheaper. Just calculate the voltage drop for the distance and size accordingly. :smile:
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I would check the price of copper vs aluminum. Copper has really come down in price. I have heard that copper is cheaper then the equivalent size of aluminum and it would be an easier pull.
 
Accordiing to 547.5
The wiring methods of Article 502, Part II, shall be permitted for areas described in 547.1(A).
ARTICLE 502
II. Wiring
502.10 Wiring Methods.
(B) Class II, Division 2.
(1) General. In Class II, Division 2 locations, the following wiring methods shall be permitted:
(1) All wiring methods permitted in 502.10(A).
(2) Rigid metal conduit, intermediate metal conduit, electrical metallic tubing, dusttight wireways.
The way I see it EMT is approved.
Any thoughts?
 
davelectric said:
Accordiing to 547.5
The wiring methods of Article 502, Part II, shall be permitted for areas described in 547.1(A).
ARTICLE 502
II. Wiring
502.10 Wiring Methods.
(B) Class II, Division 2.
(1) General. In Class II, Division 2 locations, the following wiring methods shall be permitted:
(1) All wiring methods permitted in 502.10(A).
(2) Rigid metal conduit, intermediate metal conduit, electrical metallic tubing, dusttight wireways.
The way I see it EMT is approved.
Any thoughts?
Click to expand...

I agree......Why don't they just add EMT to 547.5 and make our lives easier:-?
 
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