"Adam Funk" wrote in message
...
On 2009-08-13, PeterC wrote:

On Thu, 13 Aug 2009 06:26:02 GMT, Chris J Dixon wrote:

PeterC wrote:

On Wed, 12 Aug 2009 21:48:35 +0100, Adam Funk wrote:

But you need to know in advance what period you will actually get so
you can set the appliance timers properly.

Yes, that's the point. Storage heaters are OK, of course, but it is
useful
to know when the rate applies. That 'time envelope' is OK for load
management and still supplies the circuit switched by the meter but
things
like the washing machine...

How about looking at the meter display around the possible
switchover period?

Yes, meant to do that this morning but got distracted. I've a spare
outlet
for a storage heater so I might stick a mains neon on that as an
indicator
(easier than getting to the meter). This, of course, tells me only when
it
has happened, not when it will happen the following day!

Is your supplier actually saying the E7 period can vary from day to
day?

My meter doesn't appear to have any visual indicator as to which way it's
switched (unlike my old mechanical one).
However it does make a fairly loud clunk when it switches so I've been able
to confirm that E7 is going off at 07:00 gmt.