Emergency Exit Lights

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Old 12-18-07, 10:39 AM
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Emergency Exit Lights

Does anyone know the required minimum time emergency exits lights are supposed stay lit after a power failure? The lights in question are located in a condominium.

Thank you,
Sonny
 
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Old 12-18-07, 12:18 PM
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I think it is 1 1/2 hour minimum, with 80 something % of the rated battery voltage remaining. Someone with a code book should give you the actual figures
 
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Old 12-18-07, 04:22 PM
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it did mention some in the NEC but majorty of the rules will fall on the IBC [ International Building Code ] and also the local code amdendment as well.

majorty of the emergecy luminaires have to be rated for 90 min min with 80% voltage reversed [ again some local code will ask for more longer or spefic types as well ]

Merci, Marc
 
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Old 12-18-07, 05:57 PM
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City of New York and City of Chicago have their own very specific specs on emergency lights, which among other factors I believe require 2 hours.
 
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Old 12-19-07, 04:17 PM
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NFPA 101 -- THe Life Safety Code requires a minimum of 90 minutes, no exceptions.
 
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Old 12-19-07, 04:34 PM
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Originally Posted by dezwit View Post
NFPA 101 -- THe Life Safety Code requires a minimum of 90 minutes, no exceptions.
Good to know. Thanks!
 
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Old 12-19-07, 04:35 PM
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Emergency lights

Hi Sonny

If yer looking to buy or replace some, spend the extra and get the LED style. A little more expensive initially, but well worth not having to change bulbs and batteries nearly as often.

Thats from experience, ran 3 - 100 room barracks, 3 floors ea, 6 stairwells, 7-10 exits per building

Best for 2008
 
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Old 12-20-07, 02:45 PM
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Thank you all for your replies.

Merry Christmas & Happy New Year to all of you.

This is a great forum.
 
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Old 12-20-07, 11:56 PM
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Let me add this item before i forget this part with the exit luminaires with battery back up.

majorty of them are in commercal / industrail location but it will show up in large apartment complex and Hotel/Motel.

normally any kind of repairs to the exit luminaires are being done by electricicans becasue there is quite few diffrent type of exit luminaires and the connections and genrally it out of the DIY scope.

and yeah every year we do turn off the breaker or power to the exit luminaire[s] to test the battery back up performace it is very specifed in the NFPA 101 Life and Safety regulations

but there are some exit luminaires that can be converted to the LED they last much longer up to 20 years before burn out.

but the battery have " shelf " life the dont last forever so every few years it have to be replaced per manufacter specs.
{ AFAIK most useally ask for change battery in every 5 or 10 years depending on what type it used }

Merci, Marc

this infomation do apply to the flourscent luminaires with back up battery as well.[ this part i really recomnded get a electrician deal with this part due complex connections there. it is way out of the DIY scope here ]
 
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