I am installing self contained battery back-up emergency lighting units. I can't quite tell by looking in the code book if the 120v circuit that feeds these units must be in a separate conduit, or can the feed be tapped off of the general lighting circuit. Section 700.9 (B) is unclear to me. Thanks
Emergency Lighting Circuits
- Thread starter fester
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Re: Emergency Lighting Circuits
I'm not following your question...if the units are self contained, how else could the feeds enter other than through a seperate means. Generally speaking, self contained emer. lighting is tapped off the line side of any switches serving the area to be illuminated by the self contained emer. lights.
I'm not following your question...if the units are self contained, how else could the feeds enter other than through a seperate means. Generally speaking, self contained emer. lighting is tapped off the line side of any switches serving the area to be illuminated by the self contained emer. lights.
kturner
Member
- Location
- East Tennessee
Re: Emergency Lighting Circuits
Look at 700.12(E).
Look at 700.12(E).
Re: Emergency Lighting Circuits
My apologies for not asking the right question, I should have rephrased what I was asking. I was more concerned with the actual conductors that feed the emergency light units themselves. Can these conductors be in the same raceway as the conductors that feed the general lighting or must I run a separate conduit just for the emergency lighting conductors. I have a contactor back at the main panel board for switching of the general lighting.I understand that the connection point for the emergency lighting circuit will be on the line side of any switching device. Thanks again
My apologies for not asking the right question, I should have rephrased what I was asking. I was more concerned with the actual conductors that feed the emergency light units themselves. Can these conductors be in the same raceway as the conductors that feed the general lighting or must I run a separate conduit just for the emergency lighting conductors. I have a contactor back at the main panel board for switching of the general lighting.I understand that the connection point for the emergency lighting circuit will be on the line side of any switching device. Thanks again
- Location
- Massachusetts
Re: Emergency Lighting Circuits
Fester the line voltage conductors feeding an emergency battery unit are not part of the emergency system.
The emergency system in this case starts at the emergency battery unit.
If you feed remote low volt lighting fixtures from these battery units those conductors would be part of the emergency system and would have to be separate.
Fester the line voltage conductors feeding an emergency battery unit are not part of the emergency system.
The emergency system in this case starts at the emergency battery unit.
If you feed remote low volt lighting fixtures from these battery units those conductors would be part of the emergency system and would have to be separate.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Re: Emergency Lighting Circuits
Don't you mean 700.12(F)?
Don't you mean 700.12(F)?
- Location
- Massachusetts
Re: Emergency Lighting Circuits
They are not emergency system conductors.
If we were to say they where emergency system conductors how far back would they have to remain separate?
Back to the sub panel?
Back to the service panel?
Back to the utility?
Celtic we are taking about the supply conductors to battery equipment.
They are not emergency system conductors.
If we were to say they where emergency system conductors how far back would they have to remain separate?
Back to the sub panel?
Back to the service panel?
Back to the utility?
Re: Emergency Lighting Circuits
If an area has 1 or 2 branch circuits units battery emergency lights MUST be connected to the lighting circuits. For 3 or more lighting circuits the unit battery emergency lights MUST be connected to the same panelboard. Otherwise, the battery units would not kick on if there is a power failure particularly a branch circuit breaker tripping out.
If an area has 1 or 2 branch circuits units battery emergency lights MUST be connected to the lighting circuits. For 3 or more lighting circuits the unit battery emergency lights MUST be connected to the same panelboard. Otherwise, the battery units would not kick on if there is a power failure particularly a branch circuit breaker tripping out.
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Re: Emergency Lighting Circuits
MC, that had eveything but the reference to back up your statement.
Free of charge: 700.12(F).
Edit:
[ March 31, 2005, 06:55 AM: Message edited by: georgestolz ]
MC, that had eveything but the reference to back up your statement.
Free of charge: 700.12(F).
Edit:
Oops.
[ March 31, 2005, 06:55 AM: Message edited by: georgestolz ]
- Location
- Illinois
- Occupation
- retired electrician
Re: Emergency Lighting Circuits
mc5w,
Don
[ March 31, 2005, 07:42 AM: Message edited by: don_resqcapt19 ]
mc5w,
I don't think so. The exception says that where the area is served by 3 or more lighting circuits from the same panel, then an additional circuit from that same panel shall be permitted to supply the unit lighting equipment.
Don
[ March 31, 2005, 07:42 AM: Message edited by: don_resqcapt19 ]
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Re: Emergency Lighting Circuits
It's not wrong. Just not worded 100% correctly.
It's not wrong. Just not worded 100% correctly.
kturner
Member
- Location
- East Tennessee
Re: Emergency Lighting Circuits
fester,if you are asking if you can pull both an unswitched hot to serve the EM fixture and the switched conductors in the same home run conduit the answer is yes. These are all normal power conductors;the only emergency power conductors are inside the EM fixture. See 700.12(E) NEC 2002. (I don't have 2005 yet).
fester,if you are asking if you can pull both an unswitched hot to serve the EM fixture and the switched conductors in the same home run conduit the answer is yes. These are all normal power conductors;the only emergency power conductors are inside the EM fixture. See 700.12(E) NEC 2002. (I don't have 2005 yet).
Re: Emergency Lighting Circuits
Thank you kturner, that was the info I was looking for. I did not want to cause so much discussion about this topic. I certainly appreciate all of the feedback from everybody. It is good to see the vast wealth of knowledge that is available to anyone. Thanks again.
Thank you kturner, that was the info I was looking for. I did not want to cause so much discussion about this topic. I certainly appreciate all of the feedback from everybody. It is good to see the vast wealth of knowledge that is available to anyone. Thanks again.
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