bank of fluctauating light brightness.. bizzare
bank of fluctauating light brightness.. bizzare
(OP)
baffling issue - We have a bank of lights in a new space just built out. There is one circuit feeding an area of a floor. half of the lights on this circuit randomly dim and brighten, from 350 to 500 lux. the odd part is that there are a handful of emergency lights scattered through this area as well, and they equally dim and brighten.
one would assume there is a grounding issue. all grounds are clean, and separate on the 2 sources. the tie in where this bank connects to the remainder of the circuit is secure as well.
my next guess is some sort of frequency issue, but cant trace to anything in the area (security wiring, fire alarm wiring, AV wiring).
ANY ideas?
Thanks a ton for the help.
one would assume there is a grounding issue. all grounds are clean, and separate on the 2 sources. the tie in where this bank connects to the remainder of the circuit is secure as well.
my next guess is some sort of frequency issue, but cant trace to anything in the area (security wiring, fire alarm wiring, AV wiring).
ANY ideas?
Thanks a ton for the help.





RE: bank of fluctauating light brightness.. bizzare
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: bank of fluctauating light brightness.. bizzare
Roy
RE: bank of fluctauating light brightness.. bizzare
"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg
RE: bank of fluctauating light brightness.. bizzare
VFDs yes, but again, not nearby or off the same panel.
lighting consists of two types: 277V electronic ballast, direct/indirect fixture; and recessed pendant type, i dont know this info offhand but will look.
re: loss of neutral, this would typically occur, but how could both emergency/gen powered and normal powered both be affected?
is it possible that the two styles of fixtures are creating problems? perhaps ballast incompatibility creates harmonics?
thank you everyone..
RE: bank of fluctauating light brightness.. bizzare
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: bank of fluctauating light brightness.. bizzare
RE: bank of fluctauating light brightness.. bizzare
Keith Cress
kcress - http://www.flaminsystems.com
RE: bank of fluctauating light brightness.. bizzare
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: bank of fluctauating light brightness.. bizzare
On paper it's pretty simple. Your office is not wired that way. It's got to be traced wire by wire, load by load (fixture) and corrected.
Who wired it? I would have the contractor who did it back and let hime go home when it's working.
RE: bank of fluctauating light brightness.. bizzare
RE: bank of fluctauating light brightness.. bizzare
Keith Cress
kcress - http://www.flaminsystems.com
RE: bank of fluctauating light brightness.. bizzare
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
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RE: bank of fluctauating light brightness.. bizzare
Bill
--------------------
"Why not the best?"
Jimmy Carter