New installation inspection and testing commercial question

[micspark]

Good day

I am currently testing an installation of a new sub board
which is on a network of sub boards.What would I put for
for supply charteristics?Would it be the supply MCCB at source of
the network of boards?I would be very grateful for some help.

Regards Mick

 

[Yooj]

The supply characteristics are dictated by the sub-main supply to the board you are testing. So the supply protective device will be whatever circuit protective device is upstream from the sub-board. Earthing characteristics are denoted by the earthing arrangement within the sub-main cable etc.

Yooj