Wiring a bathroom pull-cord light switch
 

Advice needed...

I have this bathroom light switch which has three connections: S1, S2
and COM.

My ohm meter shows that when the light switch cord is pulled, a
connection is made between COM and S1. When you pull the cord again,
it changes to a connection between COM and S2. Pull it again and it
goes back to a connection between COM and S1.

The cable from the mains has a red a black and a bare copper earth.
The cable to the light is the same type.

What is the correct way to wire up the switch?

Thank you.

Al Deveron

Wiring a bathroom pull-cord light switch
 

Al Deveron wrote:

Advice needed...

I have this bathroom light switch which has three connections: S1, S2
and COM.

[...]

The cable from the mains has a red a black and a bare copper earth.
The cable to the light is the same type.

What is the correct way to wire up the switch?

You're saying that the mains feed comes into the switch first? In that
case you want

- Red (L) feed to COM
- Red (L) light to either S1 or S2

It doesn't actually matter which way round the reds go, so long as one
goes to COM and the other to S1 or S2. Then

- 2 x Black (N) connected together in a small terminal block or an
in-line insulated crimp connector; ensure that this cannot short to L or
E; insulate with heatshrink sleeving if necessary

- 2 x Earth sleeved in green/yellow and connected together in the earth
terminal provided in the mounting pattress (or with a terminal block or
in-line crimp if no earth terminal is present).

I assume the wiring is existing; if new you should be using the new
colours where L is brown and N is blue.

--
Andy

Wiring a bathroom pull-cord light switch
 

The message
from Al Deveron contains these words:

What is the correct way to wire up the switch?

Red and black to Com and S1 respectively, bare wire sleeved with
green/yellow sleeving and taken to the earth terminal in the backbox, if
there is one - which there should be.

--
Skipweasel
Pay no attention to that man behind the curtain.

Wiring a bathroom pull-cord light switch
 

On Thu, 21 Sep 2006 14:32:38 +0100, Andy Wade
wrote:

Al Deveron wrote:

Advice needed...

I have this bathroom light switch which has three connections: S1, S2
and COM.

[...]

The cable from the mains has a red a black and a bare copper earth.
The cable to the light is the same type.

What is the correct way to wire up the switch?

You're saying that the mains feed comes into the switch first?

Yes; that's the way I'm planning to do it.

In that
case you want

- Red (L) feed to COM
- Red (L) light to either S1 or S2

It doesn't actually matter which way round the reds go, so long as one
goes to COM and the other to S1 or S2. Then

- 2 x Black (N) connected together in a small terminal block or an
in-line insulated crimp connector; ensure that this cannot short to L or
E; insulate with heatshrink sleeving if necessary

- 2 x Earth sleeved in green/yellow and connected together in the earth
terminal provided in the mounting pattress (or with a terminal block or
in-line crimp if no earth terminal is present).

I assume the wiring is existing; if new you should be using the new
colours where L is brown and N is blue.

That's it! Thank you kindly for the help.

Al D

Wiring a bathroom pull-cord light switch
 

Al Deveron wrote:


The cable from the mains has a red a black and a bare copper earth.
The cable to the light is the same type.

There is some possibility for confusion here...!

If you really do mean that the mains feed comes to the switch position -
i.e. there is a cable in and another out to the light, then Andy gave
you the correct wiring.

If however you only have one cable into the switch position, then there
is also the possibility that you are in fact looking at a switch wire
from a "loop in" wiring arangement. Here the mains in will go the
ceiling rose (or light fitting), another mains out may run to the next
light in another room, and there will be a switch wire that runs to the
switch. If that is the case, then you need Guy's wiring.

What is the correct way to wire up the switch?

That depends! ;-)


--
Cheers,

John.

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Wiring a bathroom pull-cord light switch
 

On Thu, 21 Sep 2006 15:27:20 +0100 someone who may be Guy King
wrote this:-

What is the correct way to wire up the switch?

Red and black to Com and S1 respectively, bare wire sleeved with
green/yellow sleeving and taken to the earth terminal in the backbox, if
there is one - which there should be.

That is assuming there is only one cable coming into the switch,
from a ceiling rose or junction box. What the OP has outlined is a
supply cable coming into the switch and another cable then being run
to the lamp.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54

Wiring a bathroom pull-cord light switch
 

The message
from David Hansen contains these words:

That is assuming there is only one cable coming into the switch,
from a ceiling rose or junction box. What the OP has outlined is a
supply cable coming into the switch and another cable then being run
to the lamp.

That wasn't how I read it, I missed the bit about the second cable.

--
Skipweasel
Pay no attention to that man behind the curtain.

Wiring a bathroom pull-cord light switch
 

On Thu, 21 Sep 2006 22:25:26 +0100 someone who may be Guy King
wrote this:-

That is assuming there is only one cable coming into the switch,
from a ceiling rose or junction box. What the OP has outlined is a
supply cable coming into the switch and another cable then being run
to the lamp.

That wasn't how I read it, I missed the bit about the second cable.

Looking at the times of the postings on the server I don't think the
clarification had been made when you posted, but it had been when I
did. I should perhaps have pointed this out in my posting, but
didn't notice it.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54