Under-chassis wiring ?

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sllazar

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I have failed a rough electric inspection of a double wide mobile trailer office. The inspecter says that the nm cable that was ran under-chassie is a wet location and subject to physical dammage. The unit has a full skirt around it, and I just dont see how it could be a wet location or physical damage. What do you think. :confused:

Master Electricion
 
Re: Under-chassis wiring ?

Take a look in Article 100 at "Locations" Wet, Damp , Dry.

From your description it does not sound like a wet location.
 
Re: Under-chassis wiring ?

Originally posted by sllazar:
a double wide mobile trailer office.
Click to expand...
I do not believe 550 is applicable to office trailers.

Article 550 is named Mobile Homes, Manufactured Homes, and Mobile Home Parks.
 
Re: Under-chassis wiring ?

The NEC is not the only set of codes we must follow.
while the NEC leaves little leeway with this the Hud code allows a judgment call to be made.


2002 NEC
550.15 Wiring Methods and Materials.

(H) Under-Chassis Wiring (Exposed to Weather). Where outdoor or under-chassis line-voltage (120 volts, nominal, or higher) wiring is exposed to moisture or physical damage, it shall be protected by rigid metal conduit or intermediate metal conduit. The conductors shall be suitable for wet locations.
Exception: Electrical metallic tubing or rigid nonmetallic conduit shall be permitted where closely routed against frames and equipment enclosures.


Part 3280, Manufactured Home Construction and Safety Standards, of the Federal Department of Housing and Urban Development

3280.801
Scope.

(b) In addition to the requirements of this standard and Article 550
of the National Electrical Code (NFPA No. 70-1993) the applicable
portions of other Articles of the National Electrical Code shall be
followed covering electrical installations in manufactured homes.
Wherever the requirements of this standard differ from the National Electrical Code, this standard shall apply.

3280.808
Wiring methods and materials.

(k) When outdoor or under-chassis line-voltage wiring is exposed to moisture or physical damage, , it shall be protected by rigid metal
conduit. The conductors shall be suitable for wet locations. Electrical
metallic tubing may be used when closely routed against frames, and
equipment enclosures.

It's interesting to see how much differance there is between the two.

If any one need's the whole Hud code I can e-mail it to you (PM ME) or you can go to here:

Hud Clips

Just select Title 24 - Code of Federal Regulations -- 2002
Under Codes and acts
Then click on Browse

[ July 13, 2004, 08:35 PM: Message edited by: hurk27 ]
 
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