Emergency Lighting - Do's, Don't and Rules.

[SKY]

Hi All

Please can someone outline the general rules with Emergency Lighting?
I have a job to do soon in a factory packing floor where i'm fitting 25 maintained T5 2x80w fittings.

The lighting design has been completed by the guys at Dextra so I have a map of where the fittings are going and the cable runs are all in clip off ceiling channel.

Are there rules on segregation of circuits or anything I need to be aware of without buying the expensive book?

Many Thanks

 

[Micklane]

Use a key switch for the emergency light fittings on their separate circuit only. Check for the indication lamp on/off at the fittings for the test.

Regards

 

[Flanders]

i would wire the keyswiyches to only interrupt the supply to the EMs. that way you can leave the normal lighting on or switch it off with either it's own light switches or the MCB/s., whichever way suits the circumstances.

Sorry to dig up an old post I have always wired emergency lights like this but have come across installations were all the lights go out when trying to test the emergency lights in an office and so can not test the lights for the correct duration without leaving the office with low lights levels and annoying everyone in it is there a REG in BS5266 that states that non emergency lights should stay on when the emergency lights are being tested or is it just down to personnel or customer preference