I am installing Juno recessed lighting in a bathroom that I am remodeling. The lights are I.C. rated, air lock, (IC21R & IC22R) and will be installed under a finished, insulated attic.
Some of the lights are actually touching the wood ceiling joists and others have 1/2" plywood directly over them with about 1/16" of a gap between the top of the can and the plywood floor of the attic. The salesman who sold me the lights says that he called Juno and they said the cans can contact wood without a problem, it's not that I don't believe him but I want to be safe. I plan on contacting Juno if I can find out how, their customer support link on their homepage doesn't work.
So my question is: Does anyone know if it is okay for these recessed light cans to be in contact with wood? Does anyone have any feelings on this?
410.66 (A)(2) of the NEC allows IC rated recessed lights to be in direct contact with combustible materials. The code allows it and the manufacturer allows it. Just install the proper lamp and you will be fine.
Not trying to be a wiseguy but doesn't IC stand for indirect contact? You're asking if they can be direct contact. Assume the lightbulb will someday be replaced with the wrong wattage and type causing lots of heat.
Seems like a crafty lawyer would have a field day with this. Regardless of what the codebook says.
Other vendors make shallow highhats that may solve your problem.
Type IC recessed fixtures are designed to be in direct contact with insulation and combustible materials. If the fixture is improperly lamped the thermal protector will shut the fixture off. In CA we are required to use type IC fixtures anyplace thermal insulation is installed and the insulation must be in direct contact with the fixture. There have be studies that show a significant heat loss by leaving a 3" air space around the fixture. Please read article 410.66(A)(2) as Scott indicated above.
In NJ the state is making electrical contractors to install ONLY IC cans in the top floor of a house because of the state Energy Codes. They want the house to be more airtight and the regular recess fixtures can not be used in the top floor. The building inspectors are enforcing this installation.
Another thing I noticed today, with the switch to the lights turned off I am still getting 0.5 to 5 volts showing on the circuit. They are Lutron 1000 watt dimmers. I had to install 4 more cans today, I left the breaker on but turned the switch off and checked the voltage before I cut the wire, it was rangging from 0.5 to 5 volts, when I cut the wire it tripped the GFCI circuit breaker. Is this normal?