EM Lighting Circuits

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Mike01

Senior Member
Location
MidWest
When controlling emergency lighting circuits that are using 0-10v dimming with the loss of control voltage(0-10) the fixtures will go to full brightness. I recall somewhere (trying to remember what code) that requries emergency must be switched (line voltage switch leg) with a UL-924 device but it had to be from a loss of supply power, and not allow a loss of control power to be used as a means to activate the emergency lighting. I could not easily put my finger on it and was hoping someone else may have also run across this. Thanks.
 
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