Date: Sat, 29 Nov 2014 04:04:00 +0100 From: Ralf Mardorf <ralf.mardorf@rocketmail.com> To: freebsd-questions@freebsd.org Subject: Re: OT: UPS for FreeBSD Message-ID: <20141129040400.79d7b2a9@archlinux> In-Reply-To: <20141129033422.795c0099@archlinux> References: <CAHieY7QGp2ELF-R91eu=vSrPsimVmVNJQ4kfucQ56PR7EEZmig@mail.gmail.com> <m57qdq$did$1@ger.gmane.org> <54777AB1.9010800@bluerosetech.com> <m581p1$65m$1@ger.gmane.org> <54779629.302@bluerosetech.com> <alpine.BSF.2.11.1411271433320.60866@wonkity.com> <5478BD4F.7020306@yahoo.com> <5478BEE6.30308@bluerosetech.com> <5478CC08.9090307@yahoo.com> <20141128204722.561f948e@archlinux> <5478F16A.80605@yahoo.com> <alpine.BSF.2.00.1411281941080.51932@tripel.monochrome.org> <5479260d.SuFIN5ZZAEY4zdyE%perryh@pluto.rain.com> <20141129033422.795c0099@archlinux>
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> On Fri, 28 Nov 2014 17:49:01 -0800 > perryh@pluto.rain.com (Perry Hutchison) wrote: > > Chris Hill <chris@monochrome.org> wrote: > > > On Fri, 28 Nov 2014, Paul Pathiakis via freebsd-questions wrote: > > > > Get this, the main junction breaker, was a piece of bimetallic > > > > chunk of metal 1500 kVA circuit designed to melt upon overload. > > > > *shiver*) > > > > > > I believe that is called a "fuse." > > > > "designed to melt upon overload" is the very definition of a fuse, > > but bimetallic (in the context of overload protection) sounds like > > a thermal circuit breaker. I wonder if the combination may indicate > > that someone is con-fused :) > > A "1500 kVA" bimetallic thermal circuit breaker? PS: We can assume that VA doesn't mean low V * high A, but it likely is high V * high A. Regarding to the much A it must be a big piece of metal and regarding to high V the big piece of metal must bend a lot, to avoid an electric arc. Assumed it isn't a fuse and it is a thermal circuit breaker, I wonder how "fast" the metal bends and what sound is produced when the metal bends. The bimetallic thermal circuit breaker in our dishwashers is for completely different VA.
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