Earth Leakage problem has experts stumped

[AndyD]

the reason for the nuisance tripping is poor earthing, I recommend you do earth electrode testing and hit some earth electrodes in and connect it up with the supply earth.

Please can you expand on this statement?

Stay away from surge protection devices cause electricians are suppose to do a risk assessment if this is to be installed and electricians arent' doing this.

The risk assessment protcol surrounding surge protection is focussed on determining the correct type of protection rather than whether or not installing protection would be detrimental to the existing installation. Maybe you could outline the points of a risk assessment you would feel is appropriate.

Not following this risk assessment procedure will also weaken your earth so stay away.

Can you explain in more detail please.

I hit 1 earth electrode with a 16mm earth connected at the meter box at the corner of the house 90 degrees and then another two not more then at a 45 degree angle to almost make contact with the 90 degree rod. this creates a star connection and solved the problem.

Sorry, I'm also a bit confused by this as well. Are you describing the making of an earth nest? What problem did it solve?