M
Yes I was thinking that too but the observation did not explain the reason so we are only guessing why it was coded, a 6mm clip direct will take 47 amps but if its under the scratchy stuff its goes down to 27 amps (of course these figures are without any other calcs but should not change much in a domestic environment)brief look and most of it is just a tidying up of exposed connections. nowt serious there. as for the shower cable. if it's notin insulation and the shower is no more that 9.5kW, then 6mm should be fine, subject to an on site inspection.