help on wiring emergency switch lighting

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andy999

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• Sep 4, 2017

• #1

Not quite got to this stage in the project yet but trying to think forward on what needs to be done, I haven't had much experience with wiring emergency switch lighting, Live and Switch Lives. Can someone tell me if the wiring is wrong in this wiring sketch and how to rectify.
I've deliberately left out Earthing.

 

D

davesparks

• Sep 4, 2017

• #2

No that's not right, do you understand what the test switch is supposed to do?

 

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• Sep 4, 2017

• #3

yes test switch is meant to simulate a power failure on the circuit so triggering the emergency backup battery, where abouts have I gone wrong?

 

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J.C.E

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• Sep 4, 2017

• #4

C/U PERM LIVE>>COM of key switch and to com of manual override switch/photocell etc

from L1 of key switch>> L of emg light fitting
from L1 of manual override switch or photocell etc>> L1 of light fitting

the key switch is to break the perm feed to the emergency light to mimic a lose of power.

you should feed the key switch by the same circuit as the local non/emg lighting

 

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• Sep 4, 2017

• #5

J.C.E said:

C/U PERM LIVE>>COM of key switch and to com of manual override switch/photocell etc

from L1 of key switch>> L of emg light fitting
from L1 of manual override switch or photocell etc>> L1 of light fitting

the key switch is to break the perm feed to the emergency light to mimic a lose of power.

you should feed the key switch by the same circuit as the local non/emg lighting

Click to expand...

I knew there was something not right but really couldn't work it out. I haven't wired an emergency lighting circuit yet and something I really want to understand, thanks for the help JCE

 

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• Sep 4, 2017

• #6

your keyswitch should interrupt only the perm. L to the EM. it should not affect the operation of the light/s via the normal (user)switch. so you take L from supply to both switches, then L1 out of user switch to operate the light normally, and L out from the keyswitch to L on the EM.

 

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andy999

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• Sep 4, 2017

• #7

ok guys is this the correct way?

 

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• Sep 4, 2017

• #8

Shouldn't the Line Out from the end user switch also go to the L on the Emergency light fitting too?

 

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davesparks

• Sep 4, 2017

• #9

andy999 said:

ok guys is this the correct way?

View attachment 38078

Click to expand...

Nope, that won't work either.
Try actually thinking through the circuit and what will happen with the test switch in each position. Instead of drawing a box with letters and numbers on it actually draw a switch and it should become obvious.

 

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• Sep 4, 2017

• #10

get rid of the neon- that not needed.....

change your L out on your 2pole switch to go to L1 on emg fitting AND L on non emg
get rid of the L2 wiring on key switch

 

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davesparks

• Sep 4, 2017

• #11

J.C.E said:

get rid of the neon- that not needed.....

Click to expand...

How do you know this? Have you read the specification he is working to?

 

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• Sep 4, 2017

• #12

davesparks said:

How do you know this? Have you read the specification he is working to?

Click to expand...

i assumed there prob wasnt a 'spec' and he is just trying to get his head around simple EL wiring....

 

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• Sep 4, 2017

• #13

Hi guys sorry about the slow reply I'm just working it out using Daves recommendation actually drawing a switch, its certainly helped me before, and there is no spec I'm just trying to understand the wiring process of where the conductors go before/if I ever need to wire an emergency lighting circuit, I enjoy the logic side of wiring but this ones got me scratching my head

 

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• Sep 4, 2017

• #14

J.C.E said:

get rid of the neon- that not needed.....

change your L out on your 2pole switch to go to L1 on emg fitting AND L on non emg
get rid of the L2 wiring on key switch

Click to expand...

Ok got rid of the neon and ignoring the Neutral, 'L out' from the 2 pole switch now goes to 'L1' in Emergency light and 'L' in non emergency light fitting

 

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davesparks

• Sep 4, 2017

• #15

That'll work, but just be aware that different manufacturers sometimes use the symbols L1 and L interchangeably.