ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#45701 - 12/05/04 12:16 PM Florescent fixture problem
ameterguy Offline
Member
Registered: 05/17/02
Posts: 30
Loc: Mass
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?

Any help would be greatly appreciated

Bob
Top
Work Gear for Electricians and the Trades
#45702 - 12/05/04 12:54 PM Re: Florescent fixture problem
NJ Wireman Offline
Member
Registered: 08/26/04
Posts: 186
Loc: New Jersey (South Jersey)
Well lets see a couple of things.

#1 is the basement heated?

#2 Are the fixtures new or used?

#3 What else if anything is one each of the circuits?

#4Are the ballest humming or getting hot?
Top
#45703 - 12/05/04 01:44 PM Re: Florescent fixture problem
Electric Eagle Offline
Member
Registered: 04/20/02
Posts: 914
Loc: Alpharetta, GA
Try new bulbs.
Check the grounding.
Are the correct bulbs being used? They make U shaped bulbs in T8 and T12?
Top
#45704 - 12/05/04 03:01 PM Re: Florescent fixture problem
ameterguy Offline
Member
Registered: 05/17/02
Posts: 30
Loc: Mass
NJ Wireman,

The basement is heated.

The fixtures are new, been in use 3 - 4 wks.

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.)

Bob
Top
#45705 - 12/05/04 03:15 PM Re: Florescent fixture problem
mxslick Offline
Member
Registered: 10/24/04
Posts: 803
Loc: Atomic City, ID USA
ameterguy:

If you're using the green-ended "eco-friendly" bulbs, that's most likely the problem. The very low mercury content makes them hard-starting. Replace 'em with standard tubes.
_________________________
Stupid should be painful.
Top
#45706 - 12/05/04 03:53 PM Re: Florescent fixture problem
watthead Offline
Member
Registered: 10/13/01
Posts: 172
Loc: South Carolina
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.
Top
#45707 - 12/05/04 04:04 PM Re: Florescent fixture problem
NJwirenut Offline
Member
Registered: 09/15/01
Posts: 806
Loc: Bergen County, NJ
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".
Top
#45708 - 12/05/04 05:53 PM Re: Florescent fixture problem
hbiss Offline
Member
Registered: 12/16/03
Posts: 886
Loc: Hawthorne, NY USA
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.

-Hal
_________________________
www.myphonetechs.com
Top
#45709 - 12/05/04 06:03 PM Re: Florescent fixture problem
Electric Eagle Offline
Member
Registered: 04/20/02
Posts: 914
Loc: Alpharetta, GA
Thread Jack:
What do you guys do with your old tubes? Until recently I didn't know that they contain mercury so I just tossed them. Now I don't know what to do with them.
Top
#45710 - 12/05/04 09:17 PM Re: Florescent fixture problem
kinetic Offline
Member
Registered: 04/06/02
Posts: 156
Loc: Phoenix, Arizona
What do you do with the old ballasts as well? I never knew about either until recently but where are they supposed to end up?
Top
Page 1 of 2 1 2 >

Member Spotlight
Member Since: 02/23/13
Posts: 204
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
1 registered (gfretwell), 40 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Scotto, Freecrowder, clee512, Jdscott2005, FAIZAN

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals