Manual means of controlling emergency lighting

[alixenos]

Hi,

Life safety code 101:

7.9.2.3: The emergency lighting system shall be arranged to provide the required illumination automatically in the event of any interruption of normal lighting due to any of the following:

• (1)
  Failure of a public utility or other outside electrical power supply
• (2)
  Opening of a circuit breaker or fuse
• (3)
  Manual act(s), including accidental opening of a switch controlling normal lighting facilities

How can I comply with part (3) if the emergency lighting control device is a switch?

Thanks

 

[ron]

You use a UL 924 listed Emergency shunt relay, such as this:

Emergency Shunt Relay | Architectural Dimming | Lighting Control Panels | Lighting Controls and Systems

Legrand's Emergency Shunt Relay can simultaneously bypass both a line voltage switch and a 0-10V dimming signal, ensuring that an emergency fixture illuminates at full brightness during a utility power interruption.

www.legrand.us

 

[hillbilly1]

If the fixtures have a battery backup, a 24 hour circuit is ran to the inverter, and when power is lost, the emergency lamp will illuminate regardless of switch position to the ballast or driver.