Confuzzled.

[bcorps]

I have a higher ed building, with a whole-building backup generator on a single automatic transfer switch. Am I still going to need battery-powered emergency egress lighting? It would cost mucho dinero to add a separate ATS and add separate life safety panels, not to mention all of the additional branch circuits, 924 relays for identical control in classrooms, etc. Somehow I have gotten it in my head that separation is only required in healthcare facilities?

 

[don_resqcapt19]

The egress lighting and exit lighting are Article 700 circuits, so if you want to use the generator, it will have to be listed for use as an Article 700 system, and will need a separate transfer switch. Article 700 circuits must have 100% separation from all other circuits. I would suggest unit (battery) equipment for your egress and exit lighting.

 

[bcorps]

The egress lighting and exit lighting are Article 700 circuits, so if you want to use the generator, it will have to be listed for use as an Article 700 system, and will need a separate transfer switch. Article 700 circuits must have 100% separation from all other circuits. I would suggest unit (battery) equipment for your egress and exit lighting.

That's what they got, and I was questioned on the additional cost. I guess I have my answer for them. Thanks.