Emergency key switch wiring

[dave19]

Hi Guys,

Can you help ? I just wanted to know how you wire a key switch and normal switch together. Is this how it should be :-

Feed from board to common on key switch
power to emergency lights comes off the load side of key switch
loop feed comes off the common side of key switch to common side of normal switch then
power to normal lights comes off load side to normal switch.


Is this it and if not is there a different way of doing it. Please explain in as simple terms as you can. Diagrams would also help ? Thanks guys.

Dave.

 

[KAS1]

Well I have (seen a lux meter used) several times as it happens, on a major job before hand over for the clients rep to witness if memory serves me correctly.

 

[Guest55]

Well I have (seen a lux meter used) several times as it happens, on a major job before hand over for the clients rep to witness if memory serves me correctly.

during the initial verification prior to completion to ensure the designers lighting criteria has been met , yes ?

but for every subsequent routine test thereafter ?
no point.

 

[i=p/u]

Wire it either way and back to point. You funny Adam

 

[KAS1]

The fire officer may insist on the lux levels checked as he/she pulls out the decibel meter as well lol

 

[Adam W]

during the initial verification prior to completion to ensure the designers lighting criteria has been met , yes ?

That would be after the design stage.

but for every subsequent routine test thereafter ?
no point.

Maybe not "every subsequent routing test thereafter" but that doesn't alter the fact that the use of a lux meter can help detect when emergency lights no longer emit the required lux level.

 

[Adam W]

in 20 years of commercial work i have never seen a lux meter being used during the maintenance or testing of emergency lights.
so its not really a massive issue is it ?

Neither have I, but it's not to say you can't or shouldn't use one.

 

[Guest55]

Neither have I, but it's not to say you can't or shouldn't use one.

so for the last 24hrs you have been arguing in defence of a particular method of wiring a keyswitch for the purpose of carrying out a lux test that you nor i have ever seen been done during routine maintenance ?

good grief.

 

[Landril]

Quite amusing how this topic has gone from how to wire em lights, to know testing lux levels when doing maintenance.
To be honest the only places that will check them are either council, police cells an a few big companies, most maint engs see them working in em mode and couldn't give a rats arse about lux or wouldnt know we're to find a lux meter if they got asked.

 

[KAS1]

What was this all about again, was it an EM Lux key switch with or without a flex outlet lol

 

[Guest55]

im hoping to merge it into a topic about metal cased emerg. lights with no testkey in a pme supplied shed lol.
that'll really get the arguements going ;-)

 

[Adam W]

so for the last 24hrs you have been arguing in defence of a particular method of wiring a keyswitch for the purpose of carrying out a lux test that you nor i have ever seen been done during routine maintenance ?

good grief.

No that wasn't my initial reason for defending it, and I didn't favour one method over the other. What I said was wiring it in that way would facilitate the use of a lux meter to check the emergency lights are emitting the required light level.
Why do you think I should be against something just because I've never seen it being done?

 

[i=p/u]

True buff , why you think that of Adam . He's only saying you could check lux level instead of changing blackened but acceptable lamp.

do yous two work together .

 

[Adam W]

I reckon if we worked together at least one of us would be off with stress.

 

[Guest55]

What I said was wiring it in that way would facilitate the use of a lux meter to check the emergency lights are emitting the required light level.

is it a requirement under the BS5266 Emergency Lighting code of practice to carry out lux tests during routine testing ?
not that i can find.

 

[Adam W]

is it a requirement under the BS5266 Emergency Lighting code of practice to carry out lux tests during routine testing ?
not that i can find.

Are you trying to tell me BS5266 makes no reference to lux levels?
I'm fairly certain it does, and a good way to ensure compliance with that is with the use of a lux meter, not that there's any specific requirement to, but then there's no specific requirement for PAT testing but businesses still pay to get it done.