I'm sorry that Tony caught this , but as he said, if you stick your head up
It's not just electronics, I see the same thing on engineering and automotive forums. It is particuarly frusrating when it comes to electrical safety and EMC. There is, rightly, a lot of interest amonst home machinists on fitting Variable Frequency Drives (VFDs) to mchine tools. One advantage of VFDs is driving a 3 phase motor off a domestic single phase suppply. The numbeor of VFD installations you see put forward as exemplar where the VFD is uncased, no EMC filter, incorrect controls etc is astounding. The VFDs are components and need to be enclosed and, in theory, assessed for CE (UKCA
) compliance. I've commented on such poor installations and get indignat responses from "experienced electrician"(s) saying it's all fine and enclosures etc are not needed and they have done lots of "16/17/18th" edition work. This ignores the fact that the regulations they refer to are for fixed wiring installations, not equipment design which is what integrating a VFD is. There is also a lot of expousing on power voltage and current of Star / Delta 3 Phase motor connections and VFD input by people who obviously have never heard of √3 or power factor, of if they herad the term clearly don't understand it.
It also happens over legality of things like LED headlamp replacements in cars and radioactive items. I'm no lawer, but have beed taught how to interpret technical legislation (and determine compliance for UK
EU and American aircraft modifications) so hve a fair idea. People still insist that because they passed the MOT or whatever, i.e. they were not caught, it is legal
I gave up on one geiger counter group because the owner insisted that it was legal in the USA to remove the radioactive source from a smoke detector to use as a check source. It's not, and technically it's even illegal in the USA to use an intact smoke detector as a check source, not tht anyone would bother about that.
Does it matter? Possibly not, but were do you stop? The people down the road were clearly having a party on new years eve and a friends son went out and got in a fight. Similar minor infarctions but in these cases hey are possibly catching and exposing others to Covid 19.
Rant OFF