Surely the point is that we are allowed the standard ring for historical reasons but there is really no reason to design any other kind of ring as whatever you do (and also the standard ring) would be better as two radials.
 
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If it's worrying you, pull it all down and start belling out end to end on every cable, you will then know for sure. lol
 
Surely the point is that we are allowed the standard ring for historical reasons but there is really no reason to design any other kind of ring as whatever you do (and also the standard ring) would be better as two radials.

I think some would disagree with you there, me being one of them!!
 
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Those of you that do new builds with all this insulation in stud walls,behind ceilings in houses as well as in the loft space etc. I understand that 2.5mm cable is downrated to 13amps as enclosed in insulation ie below bedroom floors /above ceilings as cables cross from joist to joist. Therefore the ring would be 2 x 13amps =26amps which is then not suitable for 32amp breaker. Do you guys on new build install 4.0mm cable to overcome problem?
 

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15A rings?!
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