As per the other post. I had a job in Sheffield for Sunday morning.
No power to a flat that the customer has just rented. Did the usual stuff over the phone on Friday but was told that the main switch would not stay up.
Well even if it was a RCD main switch then that should not trip if all the MCBs are off. I even covered the MK RCD main switch scenario that trip to a halfway position and need to be pushed down before being pushed back up.
A case of slack customer syndrome springs to mind so I arranged to go this morning and sort it out.
A bog standard 16th edition CU with a 100A main switch in the OFF position awaited me. Turned out that the customer was just not shoving the main switch up hard enough.
Still, it keeps me from going to Church.