You need to forget the fact that it's a board, you have a circuit (the supply to the board) without a cpc. Therefore ADS is not being met. The Zs is too high and there is no earth fault protection. Code 2.Yes, and as I say i know exactly what needs doing to put it right. I just have never come across a board with no main earth connection so am struggling to find the appropriate reg/code.
None of the final circuit from the board will have acceptable Zs or disconnection times. All code 2.