Emergency Battery Backup

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dpenbert

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Location
Missouri
Is it required to have emergency battery backup in a light fixture that is connected to the emergency generator circuit (in a stairwell - path of egress)?

Thanks,

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David - St. Louis
 
Re: Emergency Battery Backup

"generally" you do not need both. Either a internal battery (unit equipment) or emrgency source per Art. 700 from a GENSET is permitted. If the GENSET supplies optional standby loads also and does not have a sepaerate emergency feeder, then you would need unit equipment for the luminaires.
 
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