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  1. Commercial Electrical Forum
    Hello, I am working with a company that is retrofitting LED lighting into commercial businesses. I need to be accurate in my counts of T8 fixtures and I am having some trouble with florescence strip lighting. Basically I need to know how many ballasts there are and sometimes it's difficult...
  2. 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...
  3. 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...
  4. Canadian Electrical Forum
    Hello, For the life of me, I can't seem to figure this out. NECB 2011 requires all fluorescent ballasts to meet CSA-C654 (ANSI C82.11 if outside the scope of C654). The problem is that no cut sheets or documentation I look at lists ballasts to this standard. Often it's just a vague "CSA...
  5. Lighting Design
    Who Knows were i can get a 0-10volt dimmming ballast, for a T5 347volt fixture??
  6. Lighting Design
    What are some dimmers that work well realistically with ballasts like Advance Mark-X and Lutron TuWire? They're both two-wire phase control dimmable ballasts. Of course, Lutron sells *expensive* $60 purpose-made dimmers, but could a standard magnetic load rated, fan or even a standard dimmer...
  7. New Member Introductions
    As I understand florescent electronic ballasts should live about 10 or more years. Other those few that could go bad, why there are so many going bad after 5 or six years of installation? They are mainly on a 277V. would installing a surge protector help prolong their life time?
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