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.

 

[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.

 

[Guest55]

Are you trying to tell me BS5266 makes no reference to lux levels?

no , i'm saying it doesnt request lux tests to be carried out during annual testing once the system is in service - read my statement that you just quoted again.
it also recommends standard lighting remain functional during testing as was pointed out many many posts ago by another poster.

 

[glasgospark]

depends on how the circuit is set up
emergency lights seperate circuit/switch wire
or all together - loop from key to l/sw so the key is master and the l/sw operates as normal until key put into power cut mode

 

[glasgospark]

basically pass the feed through the key before going to l/sw

 

[Adam W]

no , i'm saying it doesnt request lux tests to be carried out during annual testing once the system is in service - read my statement that you just quoted again.
it also recommends standard lighting remain functional during testing as was pointed out many many posts ago by another poster.

It says the lights have to be bright enough.
You can prove they're bright enough with a tester which tests how bright they are.

 

[Guest55]

You can prove they're bright enough with a tester which tests how bright they are.

though bs5266 doesnt even ask you to carry out such a measurement during in-service testing ??

 

[Adam W]

though bs5266 doesnt even ask you to carry out such a measurement during in-service testing ??

Maybe not but it says the lights have to be bright enough.

 

[Guest55]

Maybe not but it says the lights have to be bright enough.

well obviously :-/
your just taking the debate round in circles now for no point whatsoever.
grow up

 

[Adam W]

well obviously :-/
your just taking the debate round in circles now for no point whatsoever.
grow up

Well apparently it's not obvious enough, hence why I've had to say the same thing several times.

 

[Guest55]

Well apparently it's not obvious enough, hence why I've had to say the same thing several times.

and each time i've pointed out that youre not required by offical guidance to do the measurement you say needs to be carried out but you just wont listen.

 

[High Tower]

Ok before this gets really daft, im closing it!