On 02/12/2011 20:50, Graham. wrote:

You are suggesting that the relay contacts are high resistance and
consistently has two thirds of the mains voltage across its closed
contacts. This seems unlikely.

Is the solenoid defiantly being switched on by a mechanical relay at
230V? Or is it a solid state relay, in which case low voltage to the
load faults would be more easily explained.


Good point! See later posting about triacs!