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At the bottom of the picture, there is an erratum note, does that refer to the Spur box having two fuses, instead of the usual 1 fuse in the Phase?
Yes. By the time this edition of the Regs. was in force it was certainly not considered acceptable to fuse the neutral.

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As in, you wouldn't be allowed to have a spur coming off every point on the ring would you?
Actually, yes! --- "Not more than half the sockets installed may be served by spurs."

You can see the similar limitation in point #5 of the modern 16th edition here .

What has changed is that the 13th edition allowed a spur to feed two individual socket outlets whereas nowadays a spur may feed only one (although it may be a double socket).


[This message has been edited by pauluk (edited 02-25-2005).]