quick question. when the consumer unit is replaced, what do you have to do in the way of testing and certifying. do you have to test every circuit and record this on an eic. ie, R1 + R2, insulation tests, efli, etc, etc. ive just built an extension for a neighbour. he had a sparky in about 6 months ago to wire swa down the garden to his office. he has lighting and power for computer, kettle, etc. the spark changed the board with a split 12 way. he issued 2 "minor" certs. one for the swa. one for the office ring circuit. but no mention of the board change.