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Immersion heater - economy 7 timer wiring

Former Community Member
Former Community Member
Hello,


I have a honeywell st6400c controller and an immersion heater. 

My heater has 2 switches, off and on peak. My concern is that the heating works only with both switches on. Even if its set to trigger at off peak time only, which it does, both switches light up and if I switch off the onpeak one, the heating stops even tho the offpeak is still lit (testing this at off peak hours ofc). Is this correct ? does this not use much more electricity? I was monitoring this and Im sure it goes against the "night" hours, but my worry is that it uses much more power than it should.

Thank you for your advice

Tom
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  • 0
    Blencathra:
    How do you explain the other tails, looks like L/N/switched neutral in 4mm and L in Lout in 16 or 25mm

    Typiod:
    Blencathra:
    Typiod:

    It would appear that there is no output tail from the timeswitch.


    Whats the thick grey in the middle? most T/S outputs are on the right ,but this looks like a Sangamo and i think they were slightly different




    Not any of the many hundreds of Sangamo timeswitches that I have fitted over the years. The 25mm in the middle will be the nuetral.




     




    It would go

    Live in (usually 80A rated)

    Live in (25A rated, to run the clock)

    Neutral in (80Amp) (this has also been linked across  to give a neutral for when the meter switches)

    Neutral out

    Live out ( but nothing there)


    Edit to add I would be getting the meter operator out as the neutral for the proprty is going through the clock snd thus on the smaller cable back to the head.


Reply
  • 0
    Blencathra:
    How do you explain the other tails, looks like L/N/switched neutral in 4mm and L in Lout in 16 or 25mm

    Typiod:
    Blencathra:
    Typiod:

    It would appear that there is no output tail from the timeswitch.


    Whats the thick grey in the middle? most T/S outputs are on the right ,but this looks like a Sangamo and i think they were slightly different




    Not any of the many hundreds of Sangamo timeswitches that I have fitted over the years. The 25mm in the middle will be the nuetral.




     




    It would go

    Live in (usually 80A rated)

    Live in (25A rated, to run the clock)

    Neutral in (80Amp) (this has also been linked across  to give a neutral for when the meter switches)

    Neutral out

    Live out ( but nothing there)


    Edit to add I would be getting the meter operator out as the neutral for the proprty is going through the clock snd thus on the smaller cable back to the head.


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