Just looking through some old posts and it mentioned that if a 2.5mm t&e ring on a 32a mcb is broken its not good. To quote BAS 'not acceptable'.
Now, I understand a broken ring becomes two radials, so we have two ciruits served by one mcb, but the post says the 32a mcb is too large.
Is this because a socket on a ring draws some curent from each side of it so each side only has to take 16a before the mcb trips? And when it becomes two radials each side has t take a full 32a before tripping the mcn there fore loading the cable too much.
Is the gist of my theory on target or way off?
Now, I understand a broken ring becomes two radials, so we have two ciruits served by one mcb, but the post says the 32a mcb is too large.
Is this because a socket on a ring draws some curent from each side of it so each side only has to take 16a before the mcb trips? And when it becomes two radials each side has t take a full 32a before tripping the mcn there fore loading the cable too much.
Is the gist of my theory on target or way off?