Slightly OT: Storage Heater Unidare WMS718N : How does it "know" when electricity is cheap?

I should have added that I have a radio teleswitch next to my electricity meter.

I believe that I have found the answer on page 5 of this PDF:

So it seems that there must be TWO mains feeds into my flat. One unswitched, for most appliances, and the other, switched by the teleswitch, which only comes on during cheap rate.

So the storage heaters should be connected to the switched supply, so they should only consume cheap electricity.

Please let me know whether this is correct.

Thanks.

Martin

that's the way is's usually done an automatic swicth somewhere near the meter that switches the low tarriff circuits on.

typically these devices are wired to the low tarriff circuit when they are installed.

Bye. Jasen

If it helps my E7 meter has six cables coming out ! two from the incoming supply, two going to one fusebox and two going to the other fusebox. The meter itself has a clock timer built in that automatically sets itself to GMT and is programmed to turn on the storage and water heating for a seven hour period during the night.

In the old days the whole house got switched to E7 rate at night ! That was great until the electricity board came and ripped the mechanical switch, clock timer and mechanical meter out.