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Joined: Oct 2000
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frodo; the barns i've done have only the 'luminare' in the actual stall. Everything else i try and talk into the adjacent feed,tack room. This , not only for code related & economic reasons, but also considering a 1200lb orney animal ( i gotta lotta holes kicked in my barn )So the following would be my focus....( 2002)
547.8 Luminaires (Lighting Fixtures).
Luminaires (lighting fixtures) shall comply with the following.
(A) Minimize the Entrance of Dust. Luminaires (lighting fixtures) shall be installed to minimize the entrance of dust, foreign matter, moisture, and corrosive material.
(B) Exposed to Physical Damage. Any luminaire (lighting fixture) that may be exposed to physical damage shall be protected by a suitable guard.
(C) Exposed to Water. A luminaire (fixture) that may be exposed to water from condensation, building cleansing water, or solution shall be watertight.
Also note the latest wiring methods...
547.5 Wiring Methods.
(A) Wiring Systems. Types UF, NMC, copper SE cables, jacketed Type MC cable, rigid nonmetallic conduit, liquidtight flexible nonmetallic conduit, or other cables or raceways suitable for the location, with approved termination fittings, shall be the wiring methods employed. Article 398 and Article 502 wiring methods shall be permitted for areas described in 547.1(A).
FPN:See 300.7 and 352.44 for installation of raceway systems exposed to widely different temperatures.
(B) Mounting. All cables shall be secured within 200 mm (8 in.) of each cabinet, box, or fitting. The 6-mm (1/4-in.) airspace required for nonmetallic boxes, fittings, conduit, and cables in 300.6(C) shall not be required in buildings covered by this article.
Note the interesting commentary....
Cables must be secured within 8 in. of cabinets, boxes, or fittings installed in agricultural buildings. This distance is less than that required for cables in other types of occupancies. The requirement for a 1/4-in. airspace in 300.6(C) is judged unnecessary in agricultural buildings, provided nonmetallic wiring methods are used. Decreasing the support spacing requirements coupled with eliminating the 1/4-in. airspace requirement reduces the potential for mechanical damage to cable-type wiring methods. Locating the wiring methods directly on the interior surface of the building allows a sealant to be placed along the wiring method to facilitate cleaning. See also 300.6(C), Exception.
![[Linked Image]](https://www.electrical-contractor.net/ubb/smile.gif) Joe, Does NFPA 150 say, or elude, to boardering a horse(s) ?, as this is common practice...
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Joined: Dec 2000
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Virgil's right about the PVC80. Be sure to run everything outside of the stalls away from the horses as high and tight to the structure as you can. Any piece of pipe that can be used for hanging tack will be, and any spot that a rope could catch on will catch one eventually. Try to stay away from any wood that will have to be replaced due to cribbing or rotting. Put a switch for the lights in an easily accessible spot far away from the horses for use in those "night call" emergencies. Use enough lights that come on instantly (Qz, etc) that you can see before you go in. HID's are Ok for general lighting, but take too long to start in an emergency. Try to mount your lights in a way that vibrations from the stalls won't be transmitted to the lamps or you'll be replacing lamps way too often. Don't forget ceiling mounted recps. for fly zappers. If there's a chute that will be used for doctoring/grooming, put a GFI recp close enough to plug in clippers, etc. (And if it's a stud pony, quadruple the "crib/tantrum factor" ) All horses are on self destruct mode 24/7, whether they know it or not.
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hi,
thanks for the replies. i am glad i asked now! i am still wondering about the grounding?
i have an egc run from the service to the barn. is one ground rod not acceptable?
anybody know of a good cheap light fixture?
-regards
frodo
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Joined: Dec 2000
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OK Here we go. 250-32
As many ground rods as it takes to get <25 ohms.
PS drive another for future use by fence chargers.
A horse barn w/o water?? Is all the water system nonmetallic?
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A grounding electrode system is required and if it is a driven rod it must meet the 25 ohm rule in 250-56. If you don't test it or if it has more than 25 ohms, then you must have 2 rods.
Don(resqcapt19)
Don(resqcapt19)
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Don,
Does that mean that if 2 grd rods still read > 25 ohms it's OK?? (I don't know the answer)
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Joined: May 2001
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hi,
thanks for the replies.
the distribution point on the site (pole with 200A MAIN Loadcenter)& has two ground rods bonded together, then from the panelboard over to the barn i ran a #4 quadraplex being fed from a 40A double pole to a 40A double pole in a 12 ckt loadcenter, nema 3r.
i did not bond the neutral to the ground at the barn and i provided seperate terminals for neutrals and grounds in the panel, i drove one ground rod.
i was sure that this met the requirement.
i dont mind driving another rod but i never have in the past.
the only water at the site is about 150 feet from the barn so it's not really usable.
thanks again for the replies
-regards
frodo
[This message has been edited by frodo (edited 01-12-2002).]
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Joined: Nov 2000
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electure
Yes, if the first rod tests greater than 25 ohms, all you are required to do is to add one more rod at least 6' away from the first one. In some areas the contractor automatically puts in 2 rods as it is cheaper than actually owing the tester and testing each installation.
Don(resqcapt19)
Don(resqcapt19)
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hi,
i will put my meter on the rod and test it.
the soil is wet and loamy and a lot of rock down around 10-12 feet or so..
i live and work just outside of louisville, ky.
if the rod at the barn reads greater than 25 OHMS a second rod will be driven. then you must bond the two together and hope for a reading less than 25 OHMS or drive another rod and another unitll you get it right?
i call it overkill, but nothing is more important than a good ground!
thanks
frodo
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Joined: May 2001
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hi,
need some feedback on installing UF cable in a horse barn? i thought i would mount a pvc j-box up high and drop a PVC SCH 80 down to a few t's and set two 2 gang plastic fs boxes and a single gang plastic fs box for my switching. i have some weatheproof switch covers (2-gang, and 1-gang)i want to use there. i plan to mount the switches in one location for each stall and for the hay loft. the customer requested this.
to feed the light fixtures i thought i could run UF cable from the J-Box to single gang fs boxes using UF connectors (approved for wet location), i plan to mount a 300W quartz floodlight in each stall as high as i can get it. the lights are listed for wet locations and for use outdoors.
i feel a horse barn is outdoors as far as location goes.
i thought about piping the whole thing but it seems like UF would be the most economical way to go.
i will run a 1/2 pvc fom my panel to the j-box to feed the lights and recepts. again as high as possible.
any replies are appreciated
-regards
frodo
[This message has been edited by frodo (edited 01-13-2002).]
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