wiring methods

[dride2423]

does it say anywhere in the code that you can't start rough wiring (residential) until the building is weather tight?

 

[charlie b]

Re: wiring methods

Not in the National Electrical Code. I can't speak for local and building codes codes.

 

[hbiss]

Re: wiring methods

Normally we wouldn't do it until at least the roof is complete. The idea is that you wouldn't want your work exposed to water unless it was meant to be.

 

[electricmanscott]

Re: wiring methods

NO

 

[iwire]

Re: wiring methods

Sure you can mount dry location equipment in wet locations, as long as the listing and labeling says you can.

We do commercial work and even the GCs will question us if we start installing to early.

How do you decide what parts can get wet and what ones can't, how far do you rough, boxes and wire, panel, devices and breakers?

We never install anything until it is "raintight" and have always been told this is because of 110.3(B).

2002 NEC

110.3 Examination, Identification, Installation, and Use of Equipment.

(B) Installation and Use. Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.

 

[pierre]

Re: wiring methods

How about 110.11 Deteriorating Agents.
Equipment identified only as "dry locations," "Type 1," or "indoor use only" shall be protected against permanent damage from the weather during building construction.
Quote from 2002 NEC

I think that is where this thought process comes from.

Pierre

P.S. During my recent trip to 'Sunny Southern California', I took pictures of constuction at a commercial building under construction where not only was the wiring being installed before the roof or shell of the building, so was the sheet rock.

 

[gregory]

Re: wiring methods

It would depend what you are roughing the house with. If it was 1900 boxes & Conduit. It would be ok. Romex is only for dry locations. bx would be ok to rough in before it was weather tight

 

[don_resqcapt19]

Re: wiring methods

Location, Dry. A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction.

It appears that a building under construction is a "dry loction" even before the building is weather tight.
Don

 

[websparky]

Re: wiring methods

As long as equipement doesn't get rusty or adversely affected.

NEC 2002 110.12 Mechanical Execution of Work.
(C) Integrity of Electrical Equipment and Connections. Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other surfaces, shall not be damaged or contaminated by foreign materials such as paint, plaster, cleaners, abrasives, or corrosive residues. There shall be no damaged parts that may adversely affect safe operation or mechanical strength of the equipment such as parts that are broken; bent; cut; or deteriorated by corrosion, chemical action, or overheating.

[ June 28, 2003, 05:42 PM: Message edited by: websparky ]

 

[electricmanscott]

Re: wiring methods

Over here on planet real world it is ok to start rough wiring before the house is weather tight.

 

[tom baker]

Re: wiring methods

Washington State will not allow a NM cable wired structure to be wired until after the exterior sheathing and siding is installed per a state rule. There have been too many instances of NM cable damaged when nailing off the siding.