Comments by "eDoc2020" (@eDoc2020) on "Steve Lehto" channel.

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  11. ​ @gandalfgreyhame3425  AFAIK an arcing electrical connection like you had is probably the worst problem you can have. Besides the obvious fire risk it causes lots of high frequency noise which is bad for all the circuitry. Worst of all the household power service has a high impedance at high frequencies so noise can appear on undamaged circuits as well. I don't have any AFCIs but I've heard of many people hating them because of nuisance trips. I wonder how many of these nuisance trips are faulty detection and how many are actual faults which are slowly destroying all their electronics. I will disagree about one thing. I can assume my house wiring is doing what it's supposed to be doing. I just can't assume that anybody else's house wiring is doing what it's supposed to be doing. This is especially the case in an old large setup that has had a chance to be messed with. Or if you have an overhead service drop the wind, rain, and other elements could mess with it over time. On a bit of a related story, I've had the opportunity to see laptop hinge durability testing being done at Dell. Their robot was holding the laptop by the exact center of the screen lid and applying force in the optimal direction. I was saying to my self, those aren't realistic conditions. Under real-world conditions like grabbing from the side of the screen while holding down on the opposite side of the laptop base you'll certainly get much less than the rated 100k or whatever cycles. I'm guessing appliance development is similar. If all their product testing is done with a well-regulated and filtered supply their control boards will last forever. In the real world they could fail every six months.
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