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#80173 - 03/12/02 12:14 PM Non-IC Can in Insulated Ceiling
ElectricAL Offline

Registered: 10/10/01
Posts: 615
Loc: Minneapolis, MN USA
Hey Folks!

Been lurking for awhile. . .

Every once and awhile I get situations where the client has to have a light that can only be delivered from a trim that can only be installed in a thermally protected but non-IC rated roughin recessed housing. And, as Murphy will remind me again and again, at least one can has to go in an insulated ceiling.

Thinking specifically of
410.66 B Thermal insulation shall not be installed above a recessed luminaire (fixture) or within 75 mm (3 in.) of the recessed luminaire’s (fixture’s) enclosure, wiring compartment, or ballast unless it is identified for contact with insulation, Type IC.
What are some of the ways that insulation dams are being built (around a nonIC recessed luminaire) and accepted by the AHJ around the country?

Also: In the areas that have Air Tight requirements, are there solutions involving insulation dams or the like that allow the nonIC thermal protected can to be installed in an insulated ceiling?
Al Hildenbrand

2014 / 2011 NEC & Related Books and Study Guides
#80174 - 03/14/02 04:40 PM Re: Non-IC Can in Insulated Ceiling
motor-T Offline

Registered: 11/10/01
Posts: 293
Loc: Girard, Ohio, USA
I had the same question, and was told there are such animals, but I cant find them anywhere, supposedly made out of fibreglass and looks like a dome and is set right over the top of the Non-IC fix,Ooops ah Luminaire,but so far I have not been able to locate one.
hope you have better luck.

#80175 - 03/15/02 07:37 AM Re: Non-IC Can in Insulated Ceiling
wageoghe Offline

Registered: 02/14/02
Posts: 24
Loc: Huntsville, AL
There is an article in a recent ( last month or two ) issue of "Family Handyman" that shows a box being built around a recessed light. I don't recall if they specified if it was aimed at IC or non-IC lights. They used some sort of pink styrofoam looking stuff, taped and caulked to be airtight ( or nearly so ). This box was placed over ( or built in place over ) the recessed light.

I don't know if this addresses your question, but it might.

I'm a homeowner Jim, not an Electrician!

#80176 - 03/15/02 02:55 PM Re: Non-IC Can in Insulated Ceiling
electure Offline


Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
A little bit of drywall works great. Remember that if a piece of chicken wire keeps it 3" away, it's Code approved!

#80177 - 03/15/02 04:40 PM Re: Non-IC Can in Insulated Ceiling
sparky Offline

Registered: 10/18/00
Posts: 5545
as well as chickenproof...

#80178 - 03/19/02 10:53 AM Re: Non-IC Can in Insulated Ceiling
ElectricAL Offline

Registered: 10/10/01
Posts: 615
Loc: Minneapolis, MN USA
Thanks for the feedback.

In the past I've put up plywood or drywall enclosures to keep the insulation clear of the recessed housing. Or I've gotten the GC to get someone to do it to my specs.

Al Hildenbrand


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