H
Harry_P
Where did you study? And who told you that?I never said to just subtract 60% the figures are in the onsite guide,
Other ring would be at 40% (32 × 0.4 = 12.8A)
i just used what the OP had posted ie 40%.
Ive recently passed the design section on my apprenticeship & we we're tought that unless you can guarantee ie know for certain what is going to be plugged into the ring or radial then you go by the protective device rating & then apply diversity