Class 1 Div 2 - lighting controls

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32Lateralus

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We have a Class 1 Div 2 space with explosion-proof lighting within the space. The adjacent corridor space is not classified.

The idea is to have the lighting controlled by a relay panel in the corridor and then low voltage switches sit in the corridor outside the door to the classified room and connect directly to the relay panel.

My understanding is this is all code compliant. However, I didnt know if there was anything in regards to having the switch need to be located within the hazardous room. Both for manual use if needed and that someone in the corridor didnt turn off the lights assuming nobody was inside. Any specific sections related to this?
 
32Lateralus said:
We have a Class 1 Div 2 space with explosion-proof lighting within the space. The adjacent corridor space is not classified.

The idea is to have the lighting controlled by a relay panel in the corridor and then low voltage switches sit in the corridor outside the door to the classified room and connect directly to the relay panel.

My understanding is this is all code compliant. However, I didnt know if there was anything in regards to having the switch need to be located within the hazardous room. Both for manual use if needed and that someone in the corridor didnt turn off the lights assuming nobody was inside. Any specific sections related to this?
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How is this any different than a situation where there are no light switches at all, which is pretty common.
 
petersonra said:
How is this any different than a situation where there are no light switches at all, which is pretty common.
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The thing that made me wonder was the idea of someone outside the room being able to turn the lights off while someone was inside the hazardous space. I didnt know if there was any code pertaining to that
 
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