I had an electrician install 5 2x2 troffer fixtures in my cellar drop ceilings, these use two u-shaped 34 watt bulbs. (The fixture are Liothonia lighting, sold at Home Depot.) The fixtures are on three different circuits, two circuits have two fixtures and the third circuit has one fixture.
The fixture are all acting up, delayed starting, up to 10 - 15 seconds or they do not come on at all. The electrician has checked the wiring and remade all the wiring connections, resat the bulbs, etc.
What should be checked next? What can I have my electrician do next?
The fixtures replaced the existing pullchain fixtures that were originally installed in the cellar ceiling, when the house was built. Two circuits are on bedroom receptical circuits and the third is on the living room receptical circuits.
The ballast are not humming, but they get a little warm. Electrician said that was normal.
Electric Eagle, The Electrician verified the grounding at the fixtures and in all boxes all the way back to the panel. All was tight, but he replaced all connections anyway.
I verified the bulbs are correct, but I have not tried replacing them. I will try that this week.
Do you think the bulbs are the problem? Or could it be the ballasts? (I will try bulbs first, as there are cheaper.)
#45705 - 12/05/0407:15 PMRe: Florescent fixture problem
Get some sylvania lamps. Call lithonia and tell them you heard that would solve the problem and see what they say. I am not usually not brand loyal on fluorescents, as any of the big three (GE,Philips,Sylvania) will do. In certian cases with the u-bends the sylvania just work better.
#45707 - 12/05/0408:04 PMRe: Florescent fixture problem
The U-bend bulbs usually have a foil tape strip that runs along the inside of the "U". If this strip is damaged or missing, the lamps can be hard starters. The strip should be grounded by contact with the retaining clip that holds the closed end of the "U".
#45708 - 12/05/0409:53 PMRe: Florescent fixture problem
Talked about this before. I pulled my hair out over this same problem. The solution was new lamps from a DIFFERENT manufacturer. The ones giving me problems were Phillips, brand new right out of TWO different cases. Problem went away with GE.