Crownduit

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tom baker

tom baker

First Chief Moderator & NEC Expert
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Location
Bremerton, Washington
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Master Electrician
On a recent episode of Ask This Old House, saw this product
http://www.crownduit.com/about/
Looks interesting. I am rewiring my sons house, did well on the lighting which I did from the attic. Lost interest when I looked at going into the crawl space..
Anyone used it?
 
K8MHZ said:
It looks like it's for telecommunication. I don't see anything on the site that shows a listing for power conductors or cables.
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You don't need a listing to conceal power cables, you would if concealing just power conductors though.

Probably won't hold all that many MC cables though.
 
kwired said:
You don't need a listing to conceal power cables, you would if concealing just power conductors though.

Probably won't hold all that many MC cables though.
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don't you need a 15 minute finish over NM? (In "finished" spaces?) depending on the building code enforced?
 
We used miles of that stuff wiring old multi-story apartment buildings for cable TV back in the 80's. Nothing new there except maybe making it look fancier.

-Hal
 
nhfire77 said:
don't you need a 15 minute finish over NM? (In "finished" spaces?) depending on the building code enforced?
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334.10 Uses Permitted. ...
...
(3) Other structures permitted to be of Types III, IV, and V construction. Cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of material that has at least a 15-minute finish rating as identified in listings of fire-rated assemblies.
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IMO, superseded by...

(1) One- and two-family dwellings and their attached or detached garages, and their storage buildings.
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We did a job remolding the pubic hallways of a 15 story condo building in Boston and the plans had us run our cables for fire alarm devices, wall sconces and door holders in the top corner of the walls. After we were complete carpenters covered our cables with real crown molding.
 
To me its like cracker jacks.
There's always a surprise in the pack.

JAP>
 
iwire said:
We did a job remolding the pubic hallways of a 15 story condo building in Boston and the plans had us run our cables for fire alarm devices, wall sconces and door holders in the top corner of the walls. After we were complete carpenters covered our cables with real crown molding.
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Seen that, done that.
 
All it would be doing is protecting from physical damage in (1) One- and two-family dwellings and their attached or detached garages, and their storage buildings. Is it even required for covering is my question?
 
mwm1752 said:
All it would be doing is protecting from physical damage in (1) One- and two-family dwellings and their attached or detached garages, and their storage buildings. Is it even required for covering is my question?
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No, and the product need not even be listed other then for finish rating in areas that would require a finish rating - like the 15 minute rating needed in other then dwellings for NM cables.
 
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