RCD requirements for old install

[Aaron b]

I would have though it is a good idea to do the testing before changing the board, as it means you can still leave the good circuits energised while doing any necessary work on others.

I wonder if the electrician could see it was going to be hassle and more than he could chew for a EICR. I done one recently where the board was fitted so untidy (by solar guys) I couldn't test without re-wiring it.