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Discuss Advice , changing immersion hearted switch to digital timer in the Electrical Forum area at ElectriciansForums.net

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Conchur

Conker
Hi guys me and my partner have recently moved into a new property that us an immersion heater switch for warm water , problem is one of us always forgets to turn it off and it just burns through the electricity so therefore I bought a digital timer so it can be set when to come on and go off so we save money ,

I turned electric off at mains and took the immersion switch off and it has 3 live red wires going into switch and an earth screwed to the metal housing , now the digital timer I bought has connections for 1. Neutral 2.live from mains and 3.live output to appliance 4. Not used, as it says .

Bought from screwdix king shield socket box timer 7 day electronic , any ideas how I fit this together as I'm not to sure and any advice greatly appreciated , the immersion seitch currentlynfitted has a layout of com L1 , L1 , l2

Thanks very much guys not sure if I can upload pictures with being a new member but if required I can no problem , cheers again
 
L

LankyWill

Why have you attempted to fit and meddle with something that you are clearly not qualified to do so. I can change a washer in a tap but you don't see me fitting a gas fire.
 

Pete999

Forum Mentor
If I were you I would get a Qualified Electrician in to do this work, shouldn't cost much, you don't sound confident enough to do this work.
 

Conchur

Conker
I can't afford an electrician at present that's why I was trying to do it myself , I trust myself to do it have all the right tools just not 100% sure about the wiring didn't expect there to be 3 live wires ?
 

Specialist

Electrician's Arms
Your new digital time switch will need a Neutral connection to work, without that then you can't use it.
As has been said above, you really need to get an Electrician to sort this out.
 

Ian1981

Forum Mentor
water heaters also should have double pole isolation so unless your timeclock is double pole which normally they aren't then I'd leave the double pole switch in then come off that to a timer feeding the immersion
 
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Conchur

Conker
Thanks for replies I have no problem fitting it I know the neutral goes in number one and lives go in two and three , i know there's a 4th connection but it says not used , my problem is I have a 3rd live left over with nowhere to go so I put that in number four or is the timer not sufficient for my requirements thanks

image.jpg
 

Conchur

Conker
That is a picture of the current switch , just want to make sure the airings right the advice is greatly appreciated thanks

image.jpg

image.jpg
 

Ian1981

Forum Mentor
Not sure what you mean by 3rd live.
But excluding the cpcs a minute you should have a mains in and a mains out 4 wires

Looks like a light switch!
 

Pete999

Forum Mentor
Thanks for replies I have no problem fitting it I know the neutral goes in number one and lives go in two and three , i know there's a 4th connection but it says not used , my problem is I have a 3rd live left over with nowhere to go so I put that in number four or is the timer not sufficient for my requirements thanks

View attachment 37021
What size in KWs is the heater?
 

Specialist

Electrician's Arms
Do you have a Neutral supply to the old switch ? In your opening post you only mentioned 3 Lives and an Earth.
 
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