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NEC 700.16 emerg illumination - 2lamps OR 2fixtures

NEC 700.16 emerg illumination - 2lamps OR 2fixtures

NEC 700.16 emerg illumination - 2lamps OR 2fixtures

(OP)
NEC 700.16 emergency illumination calls that the "...failure of any individual lighting element, such as the burning out of a lamp, cannot leave in total darkness any space that requires emergency illumination..."

do the message board participants think this means each individual emergency lighting fixture (EM) should have 2 lamps (lightbulbs) even if you have multiple EM light fixtures in a space??

aka if you have two or more EM fixtures in a space, each EM with 1 lightbulb; if one of the EM fixtures lightbulb burns out does the other functioning EM fixture satisfy the code even if the footcandle level may now be below 1???

steve yarnall

http://svyarchitect.blogspot.com/

RE: NEC 700.16 emerg illumination - 2lamps OR 2fixtures

It depends, does the one failed lamp leave any area in total darkness?

RE: NEC 700.16 emerg illumination - 2lamps OR 2fixtures

(OP)
not in the kitchen, dining area or hallway of the proposed restaurant.

in the bathrooms it would be total darkness so we changed the EM fixture to a 2 bulb....

steve yarnall

http://svyarchitect.blogspot.com/

RE: NEC 700.16 emerg illumination - 2lamps OR 2fixtures

Well, there you go.

RE: NEC 700.16 emerg illumination - 2lamps OR 2fixtures

Stairwells are also among the vulnerable area.

The Code's intent is not to have a single point of failure in form of lamps, fixture, circuit, switch, panel, ATS or the like. If the emergency power source is a generator (vs. battery packs), there is more to think about and provide in the design like more than one circuit.

 

Rafiq Bulsara
http://www.srengineersct.com

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