Discuss Spur from 32MCB in the Electrical Forum area at ElectriciansForums.net
(Tin hat in place)Sorry, explain please
Your spur will not require overload protection as long as the load can not exceed the Iz of the spur cable so at most you can only have a max load of 26 amps from one double socket which is highly unlikely that that is what will be used.I think 4mm is more suited as Iz has to be higher than In.
This is a common misconception, 'multiple circuits' in one MCB is an impossibility by definition. If there is one point of connection to a protective device at the source of supply it is one circuit no matter how many cables are connected.I see plenty of EICRs stating that 'multiple circuits' are connected into 1 breaker and need rectifying. On inspection it's often just a spur taken from ring at MCB and no issue at all!