Bathroom Heat Lamp and 12-3 question

tom_p_paDecember 3, 2006

I was in Lowes buying recessed lights, and was also looking for a heat lamp housing. Is there a special housing for a heat lamp, they had the bulbs (250 Watt). And regular recessed light housings had a 75 watt limit.

Can a 12-3 wire cable be used as really 2 circuits. I am running some new circuits to some rooms I am redoing and someone at work said to run one 3 wire romex and use that as 2 circuits. I am trying to split us the rooms that are all on one 14 2 wire circuit and the breaker keeps tripping (2 bathrooms, the washer dryer, and the basement). I plan on running one 12 wire circuit to feed the washer dryer, and one 12 3 wire cable to feed the 2 bathrooms.

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NO, you cannot use regular recessed cans as heat lamps. You need a heat lamp fixture. Most have a fan built in with a thermal cutout so if it gets too hot either the light goes off or the fan comes on.
Bath fan companies make them.

Yes, you can use 12/3 to run two circuits.
NO, you cannot re-feed a 14/2 circuit with the #12 and use a 20 amp breaker. Using #12 would be a waste.
Just leave the existing as is and run new circuits to where you need them.

    Bookmark   December 3, 2006 at 8:55AM
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Regarding using a 3 wire to supply 2 new circuits to bathrooms being gutted..I just read another post where the GFCI keeps tripping because it shares the same neutral. Is this going to be my situation that I will have 2 bathrooms with seperate circuits being feed from the same neutral on the 3 wire. I did not fully understand the post. If this is the case, can I install a GFCI outlet in the bathroom, does this eliminate this problem? I will have a bathroom light and fan over the shower too which I need to get into the GFCI circuit.

    Bookmark   December 3, 2006 at 4:53PM
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If you split the circuits to two 12/2 feeds you can do as you wish after that as far as GFI devices. There will be no tripping problems.

The fan over the tub should be GFI protected only because the manufacturer most likely requires it. There is no GFI requirement for recessed lights or fans OVER tubs. Only that we follow mfg instructions.

    Bookmark   December 3, 2006 at 5:36PM
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