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  • FIRST POST
    • m0bov
    • By m0bov 14th Nov 17, 6:39 PM
    • 1,132Posts
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    m0bov
    New E7 setup (coming from complex metering)
    • #1
    • 14th Nov 17, 6:39 PM
    New E7 setup (coming from complex metering) 14th Nov 17 at 6:39 PM
    Hi, finally almost there, getting rid of the pricy complex metering. EDF are coming out soon to remove my 24hrs meter and fit an E7. Then sometime after that, remove my second deemed off peak meter that switches on for up to 10 hours a day. Of course I need some sort of timer for when I loose this meter.

    Currently I have two meters doing:
    Deemed off peak meter/E10: Feeds Consumer Unit with underfloor heating and Immersion heater

    24hrs meter:runs the CU that does everything else

    I have fitted timers for the underfloor and immersion heater, I want EDF to fit a E7 meter which will provide 24hrs supply to BOTH Consumer Units. So, at 11.30pm (or whenever) the WHOLE house gets the "cheap" electric. If needed, I can then use the immersion heater on booster during the daytime.

    Does this seem ok?

    James
Page 1
    • ProDave
    • By ProDave 14th Nov 17, 6:50 PM
    • 416 Posts
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    ProDave
    • #2
    • 14th Nov 17, 6:50 PM
    • #2
    • 14th Nov 17, 6:50 PM
    I think you are missunderstanding how it works.

    It sounds like you have an old "white meter" system where you had 2 completely separate meters and the off peak meter only metered what was used by the storage heaters etc.

    With E7 (or E10 on a modern meter) the whole house gets metered at the cheap rate during the off peak times. Then during the cheap rate times a switched output is energised that feeds the off peak consumer units feeding storage heaters etc so you don't need any timers, that is done by the supply companies switch now built into the dual rate meters.

    So leave your off peak consumer unit and let them connect it correctly.

    P.S. If your under floor heating is "real time" not a storage system, then the E10 tariff suits it much better as you get a cheap rate period in the afternoon / early evening., E7 would let you eat the floor cheap overnight but that is unlikely to be enough and of you need more heat it would be at the peak rate.
    Last edited by ProDave; 14-11-2017 at 6:53 PM.
    • m0bov
    • By m0bov 14th Nov 17, 6:52 PM
    • 1,132 Posts
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    m0bov
    • #3
    • 14th Nov 17, 6:52 PM
    • #3
    • 14th Nov 17, 6:52 PM
    Hi, yes the off peak CU is staying, I'm sure EDF said the whole house gets E7. So, are you saying the off peak CU will only come on at night? Is there no way to get both CUs live 24/7?
    • ProDave
    • By ProDave 14th Nov 17, 6:55 PM
    • 416 Posts
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    ProDave
    • #4
    • 14th Nov 17, 6:55 PM
    • #4
    • 14th Nov 17, 6:55 PM
    You can feed both CU's from the always on output of the meter, and then do your own timing, but that's not the normal way to do it and the meter monkey will need specific instructions to do it that way. You have to then be sure your timer is in sync with the suppliers timer or some of it will be charged at the peak rate.
    • ProDave
    • By ProDave 14th Nov 17, 6:57 PM
    • 416 Posts
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    ProDave
    • #5
    • 14th Nov 17, 6:57 PM
    • #5
    • 14th Nov 17, 6:57 PM
    I have just had another thought, can you post a picture of your electricity meter(s) and consumer units please as they are at the moment.
    • m0bov
    • By m0bov 14th Nov 17, 7:01 PM
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    m0bov
    • #6
    • 14th Nov 17, 7:01 PM
    • #6
    • 14th Nov 17, 7:01 PM
    https://photos.app.goo.gl/kC8hMDuQE0gYtDjt1

    white meter is the deemed off peak
    Last edited by m0bov; 14-11-2017 at 7:08 PM.
    • molerat
    • By molerat 14th Nov 17, 7:03 PM
    • 17,342 Posts
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    molerat
    • #7
    • 14th Nov 17, 7:03 PM
    • #7
    • 14th Nov 17, 7:03 PM
    You just use a Henley (splitter) block, one tail from the meter into the block and a tail out to each CU.
    Last edited by molerat; 14-11-2017 at 7:06 PM.
    www.helpforheroes.org.uk/donations.html
    • m0bov
    • By m0bov 14th Nov 17, 7:08 PM
    • 1,132 Posts
    • 755 Thanks
    m0bov
    • #8
    • 14th Nov 17, 7:08 PM
    • #8
    • 14th Nov 17, 7:08 PM
    Ok, so, WORST case, if EDF refuse, my sparks can do it?
    • ProDave
    • By ProDave 14th Nov 17, 7:10 PM
    • 416 Posts
    • 490 Thanks
    ProDave
    • #9
    • 14th Nov 17, 7:10 PM
    • #9
    • 14th Nov 17, 7:10 PM
    Yes that is the old "white meter" system, obviously quite old, though nice shiny new consumer units. And with that it is only the off peak CU that gets the cheap rate so well worth upgrading.

    Yes ask the EDF guy if he will connect both CU's to the always on output. If he won't because it's "not normal" then any qualified electrician can change it over for you, it's not a big job. But wait until after you have the new meter fitted.
    • m0bov
    • By m0bov 14th Nov 17, 7:14 PM
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    m0bov
    Thanks mate, the shiny new CUs were done few months back. I have paid out for 3 digi timers for each underfloor heating circuit and a digi timer/spur for the immersion.
    • m0bov
    • By m0bov 14th Nov 17, 7:15 PM
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    m0bov
    In fact you can see the timers on the bottom of the cupboard. They are now fitted.
    • Bark01
    • By Bark01 16th Nov 17, 1:48 PM
    • 770 Posts
    • 244 Thanks
    Bark01
    I think you have whats known as E10 heat and Power / 2 mpan E10
    (3 register). Are you over in East Anglia?

    https://www.edfenergy.com/sites/default/files/time_of_use_heating_tariffs.pdf
    • m0bov
    • By m0bov 16th Nov 17, 5:25 PM
    • 1,132 Posts
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    m0bov
    Hi, no in North Surrey. Guy came today, very helpful. All setup as always on, got my Owl monitor setup. The day rate is a few p more but the night is less than half now!
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