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Should Lighting loads be powered from Medical Isolation Panels

Issue:
Why can't you use Isolation Panels for Lighting loads ?

Product Line:
MED Isolation Panels

Environment:
Specifying

Cause:
Clarification

Resolution:
Room lighting (fluorescent field lights) should never be powered by the Isolation Power System (IPS) . Manufactures of fluorescent ballasts often have additional warnings on the product and installation documents explaining the associated risks.

Another reason for never using lighting loads, is that these lights decrease the systems' impedance ,(increasing system hazard current), to levels where the system will always be in alarm.