On Sat, 08 Sep 2012 00:48:42 +0100, John Rumm
wrote:

On 08/09/2012 00:18, Graham. wrote:
On Fri, 07 Sep 2012 23:51:05 +0100, wrote:

On 7 Sep,
Graham. wrote:

The last 3 or 4 times I have visited them I have heard a thud, and the
lights blink at the same moment. This happens maybe twice per hour,
but not regularly enough to be able to predict the next event.

The freezer starting up?

I see what you mean, and maybe Nick had this in mind too. It might
account for the timing intervals, the inrush surge of the motor
starting acting as the cartelist to set whatever it is off upstream.

The inrush for an induction motor can be enough to dim the lights for
the whole house just on its own...

I'd appreciate your view on what might be causing the thud John.

--
Graham.
%Profound_observation%