I just finished installing 3 fixtures in my in-laws basement. they are the
standard 2'x2' flourescent fixture that fit in drop ceiling track. When I
first put them up 2 of the three flickered, the ballasts hummed and the
tubes got very hot. I noticed that the u-shaped lamps reccomended to my
mother -in-law by the guy at Home Depot were energy start 32 watt models and
were not listed as being a suitable lamp according to the label on the
ballast. Noone seems to carry 40 watt lamps anymore but we finally found 34
watt lamps and put those in. The flickering stopped but now if you turn the
lights off and on again quickly one of the fixtures will not relight. Also
the hum has not gone away.
All the wiring from the breaker to the lights is 12/2 and brand new. I can't
find my good RMS meter so I am unsure of the exact voltage.
Any ideas on what could be causeing the ballast to hum still and why those
lights won't hot relight?
Any ideas would be appreciated
Regardless, U shaped lamps are much more costly. Just plain 4 footer is
better choice over the long run. Like 15.00CAD vs. 2.00CAD per lamp up
here in Alberta.
I had smae problem and ripped out all the 2X2 fixtures.
Frankly I don't like those U fixtures. The lamps are far too expensive.
Based on our commercial experience with them, the early ballast were not all
that good. We have considerable problems with them including short lamp
life and hum until all the ballast were replaced with new electronic high
efficiency ones using the 34W lamps. The new ballast/lamps performed better
and even put out more light.
Thanks for all the advice guys. Sorry to hear your advice for my in-laws
sake. They just spend good money on nice 2x2 ceiling tiles and adding 4'
fixtures is visually gonna be an unpopular idea. She bought them at HD or
Lowes but they are "Commercial rated suitable for cold and damp
environments" supposedly. I know they were over $50 per fixture. I'll run
the 4' conversion past them.
Oh I'm not worried too much about the physical as I am the aggravation for
my in-laws. Yanking the old ones and wiring in the new will take me all of
10 minutes or so. They have to look at returning the old fixtures, I think
they already threw the boxes out, getting the new ones, all new lamps etc.
They don't need any more light. They already have 3 of the 2x2 fixtures and
the basement is only 20 x 15 or so.
I had a hunch it was as simple as you guys all say. another case of big box
crap cluttering the market. I just wanted to make sure before I told my
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