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	Subject - Emrg/ exit lights David Hyatt I am not to familiar with the code on exit and emergency lights. I just browsed through code on this subject and am not clear. This is one subject that has not been discussed. Anyway, when I install exit or emergency lights, I feed power from the lighting circuit in that area right before the switch is powered. That way if power is interrupted to the switch the emergency or exit will light. Is this correct? What if the bulb blows or ballast goes? I was reading that it would still have to have emergency lighting? Not because of power failure but just being without a functioning light. Also how do you determine how many lights you need and placement of those lights? Remember I am a romex jerker, and help or suggestions would be appreciated. KSsparky Your method of supplying power to the emergency lighting fixtures is just fine. The idea being that they illuminate when power is lost to the normal lights. I believe your reference to having to come on when a lamp burns out is from 700.16. Is that correct ? If so, that refers to the emergency lighting itself. This is why emergency fixtures have two heads, if one burns out you still have light. As far as placement goes, around here that is determined by the engineer and signed off on by the fire marshall and central inspection. It comes from the life safety code and has to do with minimum footcandles, change of direction during egress, etc. Ryan_J Hi David. I don't have my book in front of me, but I'm pretty sure the section you might want to read is 700.12, particularly part (F), unit equipment. It discusses the options of how you can circuit E-lights. Pay careful attention to the exception as well. I write this up on plan review and in the feild all the time for the "lock on" requirement discussed in the exception. David Hyatt Thanks guys