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The Arc Fault Detection Device… again.

whjohnson
Some humourous but valid observations on AFDDs, the state of the industry, the wiring regs and future amendment requirements.

He also attempts to build a AFFD tester which electrically tests rather than relying upon the mechanical action of the test button on the device itself.

https://www.youtube.com/watch?v=e0ElFaKc_e8

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  • 0
    That is another very interesting article, and the observation  that XPLE does not char like PVC is new to me. The suggestion that the PVC decomposition products are essential to the 'right sort of arc' ties in with the observed experimental difficulty of establishing a continuous arc and lack of tripping with copper- copper arcs that are in free space (hence graphite electrodes and use of brass-brass arcs in informal testing.).


    I presume that like some others the author will be commenting on AMD2.


    I have some issues with the last part of his conclusions which suggests the solution to the problem of fires may be the rolling out mandatory PAT for domestic appliances in private dwellings, I suspect that is neither practical nor necessary. Looking at the grief that the recent regulations on EICR of rented property are going to cause,  and the lack of folk able to do it well, to extend the reach of PAT would be an unwise suggestion at this time.
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  • 0
    That is another very interesting article, and the observation  that XPLE does not char like PVC is new to me. The suggestion that the PVC decomposition products are essential to the 'right sort of arc' ties in with the observed experimental difficulty of establishing a continuous arc and lack of tripping with copper- copper arcs that are in free space (hence graphite electrodes and use of brass-brass arcs in informal testing.).


    I presume that like some others the author will be commenting on AMD2.


    I have some issues with the last part of his conclusions which suggests the solution to the problem of fires may be the rolling out mandatory PAT for domestic appliances in private dwellings, I suspect that is neither practical nor necessary. Looking at the grief that the recent regulations on EICR of rented property are going to cause,  and the lack of folk able to do it well, to extend the reach of PAT would be an unwise suggestion at this time.
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