contractor trailer
- Thread starter j rae
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Need article number
IF you install a meter/disconnect/panel on a pole/post, by NEC definition, you have a "structure".
When you then install wiring to the construction trailer you are under the rules of 250.32 which would required a grounding electrode system at the 2nd "structure".
(There may be a Code Article with which I am not aware the views this otherwise)
Cavie
Senior Member
- Location
- SW Florida
A trailer is a trailer is a trailer. Mobil home, Manufactured home, Doesen't matter WHO is sitting in it. Wire it per 550. Outside disconnect not attached to, 2 spare spaces, ground rods, disconnect inside etc. Ground need not be insulated. Think SER cable. EMT.
Johndeere Man
Member
- Location
- Durango, Colorado LaPlata
Inspector
Inspector
As per Augie post.
It should fall under Art.550 Start @ 550.4(A) then go from there.
Inspector
As per Augie post.
It should fall under Art.550 Start @ 550.4(A) then go from there.
RICK NAPIER
Senior Member
- Location
- New Jersey
Mobile Home.
550.1 Scope. The provisions of this article cover the electrical conductors and equipment installed within or on mobile and manufactured homes, the conductors that connect mobile and manufactured homes to a supply of electricity, and the installation of electrical wiring, luminaires, equipment, and appurtenances related to electrical installations within a mobile home park up to the mobile home service-entrance conductors or, if none, the mobile home service equipment.
A factory-assembled structure or structurestransportable in one or more sections that are built on a permanent chassis and designed to be used as a dwelling withouta permanent foundation where connected to the required utilities and that include the plumbing, heating, air-conditioning, and electrical systems contained therein.
Mobile Home.
A factory-assembled structure or structurestransportable in one or more sections that are built on a permanent chassis and designed to be used as a dwelling withouta permanent foundation where connected to the required utilities and that include the plumbing, heating, air-conditioning, and electrical systems contained therein.
Mobile Home.
A factory-assembled structure or structurestransportable in one or more sections that are built on a permanentchassis and designed to be used as a dwelling without a permanent foundation where connected to the required utilitiesand that include the plumbing, heating, air-conditioning, and electrical systems contained therein.
With these two sections in mind a contractor's trailer does not appear to fall under 550 but 230 or 225 according to how it was fed.
With these two sections in mind a contractor's trailer does not appear to fall under 550 but 230 or 225 according to how it was fed.
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Gregg Harris
Senior Member
- Location
- Virginia
- Occupation
- Electrical,HVAC, Technical Trainer
wouldn't 590 be the apropriate article since the construction trailer should be temparary and not perminent?
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
I don't see how a construction trailer can be classified as a "home" of any kind.
One could argue it is a structure, as it seems to fit the definition of a structure. However, I am not sure it is really a structure as one could argue it is manufactured and not constructed.
I also agree it is temporary and thus might well be wired per 590, which would seem to require you to provide a GES IAW article 250.
One could argue it is a structure, as it seems to fit the definition of a structure. However, I am not sure it is really a structure as one could argue it is manufactured and not constructed.
I also agree it is temporary and thus might well be wired per 590, which would seem to require you to provide a GES IAW article 250.
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petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
I had to leave my keyboard and was unable to finish.
I think you only have to provide a GES if you decide it is a structure IAW with the article 100 definition, because article 250 says it requires one, and 590.2(A) says you have to follow all the normal requirements unless specifically modified in article 590.
I think the words "built" and "constructed" strongly imply something field assembled. a construction trailer was not field assembled. A pole stuck in the ground is.
renosteinke
Senior Member
- Location
- NE Arkansas
What's a "construction trailer?"
If you mean one of those job-site offices, then 550 contains language that make clear that the article applies, that such trailers are within the scope.
If you mean something with wheels, that's filled with your tools and transported around all day, then the NEC has limited application. Your rolling workshop is essentially a big appliance, and no ground rod is needed.
If you mean one of those job-site offices, then 550 contains language that make clear that the article applies, that such trailers are within the scope.
If you mean something with wheels, that's filled with your tools and transported around all day, then the NEC has limited application. Your rolling workshop is essentially a big appliance, and no ground rod is needed.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
My first thought was that the scope specifically excluded contractor job site offices.
Interesting that they snuck in something farther down that seems to include it even though it is excluded in the scope.
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