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Historical question WRT 15 amp sockets.

broadgage

ISTR that in an old edition of the then IEE regs, that two socket outlets each of the unfused 15 amp type could be connected to a 25 amp fuse.

Have found a number wired thus in a large old house. Possibly pre-war, wired in MICC and still in good condition. 

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    I suspect that in practice that 30 amp fuse wire was often used.

    25 amp fuse wire was certainly available, even if not sold specifically as fuse wire. Every good supplier of electrical sundries offered tinned copper wire in many sizes, and generally with a list of “the rating when used as fuse wire” Old fuse boxes also had a list inside the lid giving the correct size fuse wire in SWG for different amp circuits.

    Old style fuse carriers were often marked with the  SWG size fuse wire to be used as well as the ampere rating. 22 SWG was used for 25 amp fuse wire, or should have been.

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  • 0

    I suspect that in practice that 30 amp fuse wire was often used.

    25 amp fuse wire was certainly available, even if not sold specifically as fuse wire. Every good supplier of electrical sundries offered tinned copper wire in many sizes, and generally with a list of “the rating when used as fuse wire” Old fuse boxes also had a list inside the lid giving the correct size fuse wire in SWG for different amp circuits.

    Old style fuse carriers were often marked with the  SWG size fuse wire to be used as well as the ampere rating. 22 SWG was used for 25 amp fuse wire, or should have been.

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