Thanks Mike for that update, the 66/33 kV makes more sense than the media woffling on about an 11kV fault.
Winston_1
In NZ we also have a pilot system which drives a relay in the meterbox which is energised all the time and switched off during high demand periods on the network.
It requires an extra control wire to the meter panel to operate that relay.
There is also an extra control wire on the poles or pillars in the street.
The UK tariff usually has one meter with two registers on the dial.
The top dial is often the night (low tariff) rate which is controlled via a ripple switch or timeclock. When this rate is active the hotwater cylinder is heated also.
The other dial is the normal or high rate.
A bypass switch allowes the hotwater to be heated at the higher rate too.
