I've had one of those days today.
Had a lounge, h, s & l to do this morning. Not that big a job, so I did all the prep before seting up the Storm. Turned the machine on and the trip went off on the house electrics. Shut it all down, re-set the trip and the same thing happened again and again and again - messed about for about 20 mins and decided to go and get my old machine. As this meant a 20 mile round trip, I then postponed the job booked in for the afternoon. Everything went fine on my old machine and I finished the job and returned to my workshop to check over the Storm - expecting the worse.
Pluged it in at the workshop and everything was fine and it was the same when I tried it at home.
Just one of those days!!!!