I've not been any place that didn't follow 101. All the lighting systems I have installed, other than dwellings, have had strict specs with regards to emergency egress lighting and exit sign lighting. Such as, egress lighting can not be controlled by switches or sensors, and must have back up batteries and/or be connected to a standby generator, with I think, a 20 second switchover time (I don't have 101 in front of me right now). Exit lights must never lose power, and therefore must be connected to a battery back up. All lights required to be on battery backup, must have at least a 90 minute run time.
Edited for spelling
[This message has been edited by XtheEdgeX (edited 02-15-2006).]
