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Old 01-03-2010, 07:58 PM   #1
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Dimmer Switch Question


I wired an addition on a house, Added a 20 amp breaker, 12/2wg romex, so its a fresh circuit. Brought power from panel to a double gang box, inside box is one single pole switch and one dimmer switch. Dimmer switch controls inside lights on addition and single pole controls 2 outdoor lights.
Here's my problem, inside light works perfect but outside lights flicker, the inside lights are flourescent lights special made for the dimmer switch, however outside lights are regular screw in type flourescent bulbs. Is it possible that dimmer switch is causing feedback to outside bulbs b/c of them being on the same source of power?

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Old 01-03-2010, 08:09 PM   #2
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Could it be that you have the outside lights fed from the load side of the dimmer?

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Answers based on the 2008 & 2011 NEC.
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Old 01-03-2010, 08:13 PM   #3
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no, I split the source wire, bugged three blacks and three whites, then went to switches independantly,
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Old 01-03-2010, 08:17 PM   #4
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I just installed the same exact situation in my basement and I do not have any trouble with the lights flickering. Do your flourescent lights on the dimmer dim all the way down with each other, or do some of them start to shut off the further down you go with the dimming?
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Old 01-03-2010, 08:24 PM   #5
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yes, all inside lights dim together perfectly, When I finished hooking up the fixtures and installed bulbs it was really cold outside , and because they where flourescent bulbs, maybe the cold caused them to flicker?
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Old 01-03-2010, 09:38 PM   #6
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Dimmer Switch Question


Are the CFL's you are using outside rated for exterior use?
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Old 01-03-2010, 09:51 PM   #7
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Dimmer Switch Question


Quote:
Originally Posted by Livewire78 View Post
I wired an addition on a house, Added a 20 amp breaker, 12/2wg romex, so its a fresh circuit. Brought power from panel to a double gang box, inside box is one single pole switch and one dimmer switch. Dimmer switch controls inside lights on addition and single pole controls 2 outdoor lights.
Here's my problem, inside light works perfect but outside lights flicker, the inside lights are flourescent lights special made for the dimmer switch, however outside lights are regular screw in type flourescent bulbs. Is it possible that dimmer switch is causing feedback to outside bulbs b/c of them being on the same source of power?
There's a simple way of testing whether the dimmer on the interior lights is affecting the exterior CFLs. (and whether you did connect them properly.) Keep the dimmer switch in the OFF position while you're working the outside lights. Or. Disconnect the POWER or LOAD side of the Dimmer and see the effects.! (No matter what) Don't Drink and Drive, Ever!!!

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