Hi

We are having a look at a COC inspection on a commercial building - There is a 400 Amp settable CB with a length of 185 sqmm cable feeding out.
The breaker can be set down to 350 Amp and the cable will be protected. SANS10142-1 table 6.4 pg 99
To me it is all legal and can be signed off
The argument in the workshop is that it is incorrect and that the cable should be sized to the maximum rating of the C/breaker .The setting down will be used purely to control the loading of the center.

Interested to hear what the feeling is on the forum.