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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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    The eye is not bad at seeing significant trends Mike, isn't it? Assuming about 10% of installs have been replaced in the last 12 years we should see a trend, I don't. Yes when every installation has AFDDs it might go back to the already improving trend line, this is just the increasing safety of electrics of all kinds. The "noise" (randomness of this kind of data) is certainly bigger than any possible signal of improvement, the trend from "unknown" cause is much greater than the AFDD one.


    An interesting aside is that AFDDs in the US are much cheaper than here. Presumably, the cost to manufacture is similar, so our price is simply profiteering. Other electrical items are fairly similar in price, and most probably come from the same factories in China anyway!
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  • 0
    The eye is not bad at seeing significant trends Mike, isn't it? Assuming about 10% of installs have been replaced in the last 12 years we should see a trend, I don't. Yes when every installation has AFDDs it might go back to the already improving trend line, this is just the increasing safety of electrics of all kinds. The "noise" (randomness of this kind of data) is certainly bigger than any possible signal of improvement, the trend from "unknown" cause is much greater than the AFDD one.


    An interesting aside is that AFDDs in the US are much cheaper than here. Presumably, the cost to manufacture is similar, so our price is simply profiteering. Other electrical items are fairly similar in price, and most probably come from the same factories in China anyway!
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