Photcell problem with HID light


Old 10-24-07, 03:27 PM
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Photcell problem with HID light

Installed 2 metal halide 100 watt floodlights. You could use to wire with 220V or 110V. Pretty sure I wired right for 110 volt and had to install my own electric eyes.
Well one works fine. The other worked fine one day then would stay ON all the time. Guessed maybe a bad photcell so brought a different one and replaced.
But same thing. Worked one day then stays on.
Thanks for Any suggestions
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Old 10-24-07, 04:50 PM
Join Date: Apr 2005
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I'm no expert, but I've done a number of these at my church.
Verify the wiring is correct i.e. using the 120v tap on the ballast. Sometimes the markings on the wires are difficult to read. Make sure the others are isolated with wirenuts.
Typically, the photocell is wired with its black to your 120v line and white to your line neutral. The RED wire from the photocell is tied to the 120v tap on the ballast. The ballast common is tied to the other whites. The fixture should be adequately grounded.
Also, make sure the sliding "window shade" is not covering the eye.
And obviously, make sure the cell has a relatively clear view of the lighted sky.
Hope this helps.
Old 10-24-07, 06:00 PM
Join Date: Nov 2004
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You have to make sure the photocell is rated for ballasted loads. Some of the inexpensive one can not be used on fluorescent or HID fixtures.

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