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  1. Commercial Electrical Forum
    I am looking for Dimmable Ballasts for T12, 40 watt, 4' Optima 32 Fluorescent Lamps! Spoke with Philips/Advance and Fulham with no success. I am hoping one of you fine electricians out there will be able to steer me in a direction where I might find some of these elusive items. I am looking for...
  2. New Member Introductions
    Today I installed 4 sets of Philips Advance mark 7 GZT-2S32-SC ballasts into old fixtures. 2 of the sets came on fine and the other 2 not so much. They are on separate circuits which are shared with the rest of the floor. The 2 unworking sets have the first light in the row turn on for a...