Trumpy, the units in question are labeled "radio interference filter".


Scott35, these filters do not have individual ground leads or terminals. They are grounded just like the ballast itself. The housing is metal and is bolted to the metal fixture housing. Therefore, the filter would need to be insulated from the fixture. Grounding the filter ANYWHERE will cause the system to go into alarm since a leakage will be detected (the monitor reads the neutral and hot and checks for an imbalance just like a GFCI breaker).

Hopefully, I will hear from the EE tomorrow. Thanks for the responses.