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Old 07-31-2017, 06:54 PM   #1
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Default Emergency lighting

When you turn off the breaker to a emergency light, the emerg light will turn on. When this happens is there still a load on the neutral going back to the panel?
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Old 07-31-2017, 06:57 PM   #2
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Is it one of those battery backup lights?

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Old 07-31-2017, 06:58 PM   #3
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Originally Posted by Sparky_136 View Post
When you turn off the breaker to a emergency light, the emerg light will turn on. When this happens is there still a load on the neutral going back to the panel?
If it is part of a MWC there could be.
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Old 07-31-2017, 07:21 PM   #4
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Not enough info! Is this breaker on an emergency panel or a normal system panel? If normal, is there a battery ballast at the fixture? A fixture-mount ATS that switches over to emergency circuit? Some other ATS for the floor? If emergency panel, is there also a battery ballast in the fixture?

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Old 07-31-2017, 10:45 PM   #5
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Old 08-01-2017, 12:27 AM   #6
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Welcome aboard @Sparky_136!

Can you explain the situation a little better?
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Old 08-01-2017, 10:36 AM   #7
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Sorry for the lack of info lololol it's an exit light with a battery pack which is off of a regular panel. Hope that helps
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Old 08-01-2017, 11:55 AM   #8
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Don't you have an amprobe? The answer is no by the way.
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Old 08-05-2017, 02:53 PM   #9
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If there is a battery back up then no. It is running off the battery
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Old 08-05-2017, 04:02 PM   #10
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Quote:
Originally Posted by Sparky_136 View Post
When you turn off the breaker to a emergency light, the emerg light will turn on. When this happens is there still a load on the neutral going back to the panel?
Quote:
Originally Posted by sbrn33 View Post
If it is part of a MWC there could be.
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Originally Posted by macmikeman View Post
Don't you have an amprobe? The answer is no by the way.
@sbrn33 is saying it could if it's on a MWBC but that has nothing to do with the emergency light part.

Otherwise generally as @macmikeman said the answer is no assuming the wiring isn't F*d up, but it isn't carved in stone, if you have a crossed up neutral or something anything's possible. Or if you turned off the wrong breaker.
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Old 08-05-2017, 04:14 PM   #11
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What Dizzykidd said.

The light is powered by the battery circuit, not the power circuit. There should nothing flowing thru the relay that just dropped out to turn on the light.
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Old 07-10-2018, 04:49 PM   #12
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From 46-300 to 400, what I understand is I can connect emergency lights and exit lights to different circuits, as long as they are not controlled by switch. Am I right?
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Old 07-10-2018, 05:28 PM   #13
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From 46-300 to 400, what I understand is I can connect emergency lights and exit lights to different circuits, as long as they are not controlled by switch. Am I right?
Would be kinda pointless to have it on a light switch. That would be called a battery powered night light
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Old 07-11-2018, 01:35 PM   #14
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From 46-300 to 400, what I understand is I can connect emergency lights and exit lights to different circuits, as long as they are not controlled by switch. Am I right?
Exit lights and emergency lights must be connected to the same light circuit serving the space unless you have 3 or more lighting circuits in that space. If the exist/em lights were on different circuits then the space and you lost that circuit in the space then the exit/em would not come on due to that fact that they still have power.
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Old 07-12-2018, 06:18 PM   #15
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Exit lights and emergency lights must be connected to the same light circuit serving the space unless you have 3 or more lighting circuits in that space. If the exist/em lights were on different circuits then the space and you lost that circuit in the space then the exit/em would not come on due to that fact that they still have power.
Exit (not exit combos) don't need to be connected to the local circuit.
Because you're only concerned with keeping the exit sign lit.
They should be lit all the time.

Sometimes local requirements wants exits on dedicated circuits with breaker locks. To avoid end of night crew shutting off all the lights with lighting breakers, loosing power to the exit signs, & draining the batteries every night. Larger facilities the may be on a generator to avoid battery maintenance on 1000s of signs.

The emergency lighting could be a few of the same light fixtures connected to a generator. Sometimes they are also night lights (unswitched). Or they could have a contractor arrangement to turn on the light fixtures even if the wall switch is off if the local circuit is lost.
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