Here is a simple fix, these fixtures are outside of the "Patient Vicinity" and can be removed from the Isolation System/s.
The 5 ma alarm level is becoming harder to maintain with more and more electronics being brought into O.R's.
A common problem is Hospitals not buying specific HG equipment and the leakages that are normal on this non HG equipment. (There are even HG TV's)
Any filter that has any reference to ground will cause the Lim's to alarm.
We have a minimum of 200,000 ohms at 120v >0006A at an idle state, which is the maximum allowed to commission the room into service, and a 24,000 ohm at 120v = 005A alarm level.
Capacitive coupling in itself do to poor insulation, (you should use the best xhhw available) or length of accumulative condutors will cause problems before any loads are introduced to the system.
The bottom line is the filters will have to go or the flourescents will have to be put on a non iso system as I said before.
Roger
[This message has been edited by Roger (edited 03-01-2004).]
