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    Russ941's Avatar
    Russ941 Posts: 1, Reputation: 1
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    #1

    Jan 25, 2010, 10:06 PM
    Lighting using multiple motion sensors
    I have 20 fluorescent light fixtures controlled by 4 motion detectors triggering a 20 amp relay. The detectors red trigger wires are all connected parallel to the relays coil. How come I keep frying my motion detectors. I've tried several different brand of detectors.
    Sometimes the system will function for a few weeks.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Jan 26, 2010, 07:29 AM

    The Motions need to be on the same circuit, If they were powered from different circuits, particularilly the opposite phase, I would see a problem.
    I don't see the relay causing the problem as it surely draws less than 1 Motion can handle.
    Can you verify they are on same circuit? Do they all go out?
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