emergency system vsLR standby system

[scott657]

what is the criteria that determines the requirements for an emergency or LRSS.
The Job I am working on Is a library that is using an Inverter (3kv) as a back up mainly for lighting and one fire alarm panel. The problem is weather or not we can use the same raceway for normal and emergency power. The inverter circuits are used as part of the normal everyday lighting system

 

[david]

Re: emergency system vsLR standby system

NEC handbook commentary:

Emergency systems are designed and installed to maintain a specific degree of illumination or provide power for essential equipment if the normal power supply fails. Examples of essential equipment include fire pumps and operating room and life-support equipment in hospitals.
Article 700 applies to the installation of emergency systems that are essential for safety to human life and are legally required by municipal, state, federal, or other codes or by a governmental agency having jurisdiction.
Article 700 does not dictate whether emergency systems are required or where emergency or exit lights should be located. These determinations may be made by using NFPA 101?, Life Safety Code?.
If authorities determine that emergency lighting, including the proper placement of exit signs, is required for safe egress from various classes of buildings or parts of buildings, then corridors, passageways, stairways, lobbies, and so on must also be sufficiently illuminated.

[ September 06, 2003, 02:19 AM: Message edited by: david ]