Path: csiph.com!eternal-september.org!feeder.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail From: Don Kuenz Newsgroups: sci.electronics.design Subject: Re: AC switch fault current philosophy Date: Fri, 29 Dec 2017 14:19:13 -0000 (UTC) Organization: A noiseless patient Spider Lines: 20 Distribution: world Message-ID: <20171229b@crcomp.net> References: <20171228b@crcomp.net> <59661b66-48e1-4fa6-af76-add643d74694@googlegroups.com> Injection-Date: Fri, 29 Dec 2017 14:19:13 -0000 (UTC) Injection-Info: reader02.eternal-september.org; posting-host="b05eb7a3ea64fda9c29261228ca20e09"; logging-data="10461"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18+Yd2Pk4JzTVs9utAztAS9" Cancel-Lock: sha1:1ZU3t8lrzhbfb53mTZICjIqiOJI= Xref: csiph.com sci.electronics.design:489562 pcdhobbs@gmail.com wrote: >>You might limit the current and trip the mains breaker to cope with the >>short. That way you simultaneously protect the shorted device and send >>users a dramatic message that something's wrong. > > You mean the breaker at the _panel_? How do you know if it's magnetic or thermal? > > And then somebody plugs it into daisy-chained extension cords and your > 'safety device' burns down the building. Brilliant all round. :( You "missed the boat" with my 'safety device.' piglet's semiconductor switch only makes sense to me when its part of the electrical wiring and not plugged into either an outlet or a daisy chain of extension cords. (BTW, isn't a daisy chain of extension cords against the regs?) Thank you, -- Don Kuenz, KB7RPU