I have purchased a 20A immersion heater switch with no paperwork included.
Can someone advise me how to wire it?

Looking at the back of the switch there there are three terminals on the
left side:
Earth,
L2
L1.

On thr ight side, there is:

Earth
N2
N1


Which wires from the two 3-core cables (mains feed cable and immersion
heater cable) go where?

Thank you.

Al

On Jan 26, 12:29*pm, "AL_n" wrote:
I have purchased a 20A immersion heater switch *with no paperwork included.
Can someone advise me how to wire it?

Looking at the back of the switch there there are three terminals on the
left side:
Earth,
L2
L1.

On thr ight side, there is:

Earth
N2
N1

Which wires from the two 3-core cables (mains feed cable and immersion
heater cable) go where?

Thank you.

Al

L1 - should be the live supply
N1 - neutral supply
L2 - switched live
N2 - switched neutral
All protective earth wires are permanently bonded together. There
will be seperate earth bonding points so as to enable solid core
connection from the supply and flexible wire connection to the tank.
The permanent conducter between the two earth bonding terminals is not
always completely visible (or at least not obviously).

On 26/01/12 12:29, AL_n wrote:
I have purchased a 20A immersion heater switch with no paperwork included.
Can someone advise me how to wire it?

Looking at the back of the switch there there are three terminals on the
left side:
Earth,
L2
L1.

On thr ight side, there is:

Earth
N2
N1


Which wires from the two 3-core cables (mains feed cable and immersion
heater cable) go where?

Thank you.

Al

The mains cable goes L1 Brown
N1 Blue
E Green/Yellow

The Immersion cable L2 Brown
N2 Blue
E Green/Yellow

Andy C

Andy Cap wrote in
:


The mains cable goes L1 Brown
N1 Blue
E Green/Yellow

The Immersion cable L2 Brown
N2 Blue
E Green/Yellow

Andy C



Many thanks!

Al

On 26/01/2012 12:29, AL_n wrote:
I have purchased a 20A immersion heater switch with no paperwork included.
Can someone advise me how to wire it?

Looking at the back of the switch there there are three terminals on the
left side:
Earth,
L2
L1.

On thr ight side, there is:

Earth
N2
N1

Connect your input mains cable to one earth, L1 and N1, connect the load
to the other earth, L2 and N2



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

thirty-six wrote in news:55cda99b-d7dd-45f6-99e3-
:

L1 - should be the live supply
N1 - neutral supply
L2 - switched live
N2 - switched neutral
All protective earth wires are permanently bonded together. There
will be seperate earth bonding points so as to enable solid core
connection from the supply and flexible wire connection to the tank.
The permanent conducter between the two earth bonding terminals is not
always completely visible (or at least not obviously).



So there IS a connection from one earth terminal to the other (although not
visible), yes? I should have tested that with my ohm meter, but I was
assuming that the two terminals must surely be connected... and now I am no
longer at the premises.

The switch itself is a strange one. It has three red LEDs which shine
through the white plastic switch fascia! (relying on the tranluciency of
the plastic to be visible) - Made by Legrande... Discontinued model!. I
hope that doesn;t mean it was a bad design in some way. Otherwise, I'm
surprised they discontinued it, because aesthetically, I think it's nicer-
than the type with a small red plastic window with a neon bulb behind.

Thanks to all for the clarifications.

Al

On 26/01/2012 15:59, AL_n wrote:
wrote in news:55cda99b-d7dd-45f6-99e3-
:

L1 - should be the live supply
N1 - neutral supply
L2 - switched live
N2 - switched neutral
All protective earth wires are permanently bonded together. There
will be seperate earth bonding points so as to enable solid core
connection from the supply and flexible wire connection to the tank.
The permanent conducter between the two earth bonding terminals is not
always completely visible (or at least not obviously).



So there IS a connection from one earth terminal to the other (although not
visible), yes? I should have tested that with my ohm meter, but I was
assuming that the two terminals must surely be connected... and now I am no
longer at the premises.

They will be joined. But as you say, if ever in doubt, a quick
resistance check will tell you what you need to know.

The switch itself is a strange one. It has three red LEDs which shine
through the white plastic switch fascia! (relying on the tranluciency of
the plastic to be visible) - Made by Legrande... Discontinued model!. I
hope that doesn;t mean it was a bad design in some way. Otherwise, I'm
surprised they discontinued it, because aesthetically, I think it's nicer-
than the type with a small red plastic window with a neon bulb behind.

Thanks to all for the clarifications.

Al


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Jan 26, 3:59*pm, "AL_n" wrote:
thirty-six wrote in news:55cda99b-d7dd-45f6-99e3-
:

L1 - should be the live supply
N1 - neutral supply
L2 - switched live
N2 - switched neutral
All protective earth wires are permanently bonded together. *There
will be seperate earth bonding points so as to enable solid core
connection from the supply and flexible wire connection to the tank.
The permanent conducter between the two earth bonding terminals is not
always completely visible (or at least not obviously).

So there IS a connection from one earth terminal to the other (although not
visible), yes? I should have tested that with my ohm meter, but I was
assuming that the two terminals must surely be connected... and now I am no
longer at the premises.

I think it was a condition of the standards in this country that the
earth bar could be seen to be intact, even if not completely open, it
could be seen from a side appature.


The switch itself is a strange one. It has three red LEDs which shine
through the white plastic switch fascia! (relying on the tranluciency of
the plastic to be visible) - Made by Legrande... Discontinued model!. I
hope that doesn;t mean it was a bad design in some way.

Some models become discontinued due to a change in catalogue
reference. It could be just that your supplier is getting a better
deal on another manufacturers products he considers of equal quality.

Otherwise, I'm
surprised they discontinued it, because aesthetically, I think it's nicer-
than the type with a small red plastic window with a neon bulb behind.

Thanks to all for the clarifications.

Al