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PostPosted: Sat Oct 22, 2016 11:36 am 
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Hi All, Appreciate your assistance with this enquiry. I am a Brit in Hong Kong trying to replace a simple switch for a bathroom fan, but due to 2 typhoons here in the past week, all the sparky's are flat out with work and I can't get anyone for weeks. The switch to be replaced is a Danler timer switch (pictured), but I'm looking to replace it with a simple single pole clipsal light switch (of which I have 2 options lying around - 2 terminal and 3 terminal, also pictured. ) Unfortunately despite a lot of googling, I just can't be sure which wires go where in the new switch (and which is best to use, if either)

As I understand it, HK wiring confirms to UK standards and this flat was re-wired in 2010, however HK 'tradesmen' are notorious for cutting corners whenever they can. That said it seems like the work has been done well.....

So please advise which switch to use and how it needs to be wired. The important info that you can't see in the pictures is the way the current timer switch is wired (it's worked fine for the past 6 yrs so I assume it's just worn out).
Blue goes to the Neutral terminal
Brown to SW/L terminal
Red (labelled as 'for light') goes to the Live terminal,

How do i translate this to the clipsal terminals?

Many thanks


Attachments:
File comment: Two choices of clipsal single pole switches
Switch - 5.jpg
Switch - 5.jpg [ 44.07 KiB | Viewed 1712 times ]
File comment: Close up
Switch - 3.jpg
Switch - 3.jpg [ 64.61 KiB | Viewed 1712 times ]
File comment: Current wiring of timer switch
Switch - 2.jpg
Switch - 2.jpg [ 53.49 KiB | Viewed 1712 times ]
File comment: The timer switch to be replaced.
Switch - 4.jpg
Switch - 4.jpg [ 27.26 KiB | Viewed 1712 times ]
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PostPosted: Sat Oct 22, 2016 12:33 pm 
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:dunno:
Sorry to say this but the best any one here can do is guess, but if we get it wrong.............
Although you say HK wiring is to the UK standard, there is no standard for wiring "odd things" such as your fan controller. You need to find out which wire does what by use of a multi meter.

As For which switch I would opt for the one with 2 terminals, and you need to leave the 3rd wire isolated in a "choc bloc" or similar.

It looks like you have a Live, switched live and neutral, but as I first said all any one can do from here is guess. I also note one of the wires has a label (Most unusual) do any of the other two have labels?

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Take it easy, a forum is only a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link. to find out more.

No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

If gloom had a voice, it would be me. :mrgreen:

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PostPosted: Sat Oct 22, 2016 2:19 pm 
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Thanks 'Someone' for the reply, much appreciated.

Unless I'm mistaken, I think you've answered the main question already. I'm confident (famous last words) that the wiring of the original timer switch is correct and therefore the wires are:
Blue = Neutral
Red = Live
Brown = switching live. Thus my original questions should have really been:
a) Should I use the 2 terminal or 3 terminal switch.
b) What do I do with the spare Neutral that doesn't seem to have a home.

The only slight question I have now is the labelling of the clipsal switches. The 2 terminal has its terminals labeled as 'com' and 'load' and the 3 Terminal as 'common', '1', 'X' and a 'L' (loop i suppose), the same as the attached diagram. Therefore, using the 2Terminal switch, it seems Red (Live) should go to 'com' and brown 'SW/L' goes to 'Load'? And I Isolate blue (neutral) with a choc bloc as you advised.

As for lables on the wires, no this is the only one, I also opened the light switch that adjoins the fan switch (they're on the same circuit breaker) and there are no labels on any of those wires either.

Thanks


Attachments:
File comment: Inside switch for ceiling light that is on the same circuit breaker as the fan switch
Switch - 1.jpg
Switch - 1.jpg [ 38.11 KiB | Viewed 1687 times ]
Labels - 1.jpg
Labels - 1.jpg [ 37.59 KiB | Viewed 1687 times ]
light-switch-wiring-diagram-l-e2dc9b5b45070b58.png
light-switch-wiring-diagram-l-e2dc9b5b45070b58.png [ 4.64 KiB | Viewed 1687 times ]
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PostPosted: Sat Oct 22, 2016 3:11 pm 
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It doesn't matter which wire goes where on the 2 terminal switch. And yes, as I said you must isolate the neutral wire as it is no longer required.

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Take it easy, a forum is only a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link. to find out more.

No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

If gloom had a voice, it would be me. :mrgreen:

:idea1: How to post a picture on this forum Click here


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PostPosted: Sat Oct 22, 2016 4:16 pm 
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Ok great, many thanks, job done, fan working, no fires broken out.

Cheers


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PostPosted: Sat Oct 22, 2016 4:19 pm 
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:salute:

_________________
Take it easy, a forum is only a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link. to find out more.

No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

If gloom had a voice, it would be me. :mrgreen:

:idea1: How to post a picture on this forum Click here


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