emergency lighting

[Mwoods4757]

Hi all im trying to teach myself how emergency lighting is wired. so for example maintained emergency lights. i have a rough idea not sure if its right as im still a trainee and the lads im working with not much interested in teaching.

do you go from the cu to the key switch with your feed. then from the load side of the key switch link to common on switch, also from load side go to loop on light, and then from the l1 on the switch is your switched live.

thanks

 

[guest119]

Maintained lights can be on a separate circuit as they are always on. Therefor when the local circuit fails they will already be on to provide cover.
Non maintained must be on the local circuit as it is the only way to ensure they light up when the local lighting fails.

Boydy

 

[Darkwood]

First you need to decide what kind of E/M light we are discussing

Maintained
Non-maintained
Sustained etc etc

 

[terminator]

I have always fitted maintained or non-maintained on the local circuit - it is standard practice! If the local fails, the batteries or standby takes over instantaneously. I personally think it's bad practice to have them on different circuits.