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Immersion Heater & 13 Amp socket.

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We were discussing the rating of 13 Amp sockets recently, both double and single types. The rating seems to be 13 Amp. as indicated on the back of the accessories. Yesterday I had to replace a 13 Amp. single socket that became faulty. It supplied a 3000 Watt water heater. Did the 13  Amp plug burn out? No. Did the socket burn out? No. But the socket switch terminals welded together and would not switch off. So I fitted a 20 Amp double pole switch instead. So, even if a 13 Amp. socket is marked 13 Amp. it may not deliver 13 Amps. reliably, perhaps the makers apply "diversity" when calculating the load current and sizing the contacts for their 13 Amp sockets.


Z.
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    What is the rated current of a BS 1363 socket and plug if it is not the current that may safely be handled continuously; and if it is a switched one, made and broken?


    The type testing requires that the switch still works after being cycled 15,000 times on the full rated load. It is also interesting to note that the combination must also survive insertion and withdrawal on load 15,000 times.


    The caveat is that the circuit should be "substantially non-inductive".


    Perhaps there is a quality-control issue at some manufacturers?
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  • 0
    What is the rated current of a BS 1363 socket and plug if it is not the current that may safely be handled continuously; and if it is a switched one, made and broken?


    The type testing requires that the switch still works after being cycled 15,000 times on the full rated load. It is also interesting to note that the combination must also survive insertion and withdrawal on load 15,000 times.


    The caveat is that the circuit should be "substantially non-inductive".


    Perhaps there is a quality-control issue at some manufacturers?
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