Soon after having P.V. solar panels installed by a well known Sydney company, our trip switch on the house power circuit would occasionally go off early morning. I called back the installation company and they replaced the inverter. After a week it happened again. This time I called our electricity company to check it. The electrician checked all the circuits and found everything was good. Asking him what he thought was the problem, he replied that he had no idea.
So I then decided to do some basic tests. Over two weeks, I would turn off a house circuit, also individual appliances throughout the house, but to no avail.
What I did notice was, it trips in the morning after first light and usually on a dull cloudy or wet morning around the time the light is strong enough to start to register on the inverter dial.
I once again called the initial installer to check the P.V. installation, as I suspected that somehow it is 'earthing'. The electrician spent two hours but could not find the problem and he had no clue either!
If I turn the solar panels off at the board each night, it does not trip the power circuit.
My question is: Can an expert in this field, possibly come up with a solution as to why my trip switch goes off and has only done this after having solar panels installed.