The installation conditions of regs 433.3.1 and 433.2.2 are the same, and neither has anything to do with spurs off of rings.....You are completely wrong, the reg that allows unfused spurs off of rings is 433.1.5.
433.1.5 (very soon to be 433.1.103) makes no reference to fused spurs fed via a spur cable from a ring - so one can but assume that 433.2.2 has to be satisfied in relation to such a length of cable (which I believe it usually will be). However, I agree that 433.1.103 does itself appear to allow unfused spurs.
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