[sdiy] OT: Mains Safety PSA

Chromatest J. Pantsmaker chromatest at azburners.org
Sat Jan 15 01:57:04 CET 2022


Clearly the breaker is bad and needs to be replaced before you burn your
house down.

On Fri, Jan 14, 2022 at 3:10 PM cheater cheater <cheater00social at gmail.com>
wrote:

> The breaker is rated 12A. I can get it to trip at 34A. I think that's
> all that needs to be said.
>
> On Fri, Jan 14, 2022 at 5:22 PM Chromatest J. Pantsmaker
> <chromatest at azburners.org> wrote:
> >
> > I'm in the US, and I've done extensive house wiring here, but I know
> nothing about what is acceptable or even legal in other countries.
> >
> > In the US, we run 120V for regular wall outlets.  The regular
> receptacles are rated at 15A.  The wiring needs to be rated for at least
> 15A, and the fuse/breaker can be rated no higher than the rating of the
> smallest wiring conductor between the breaker and outlets.  This is
> typically 14 gauge (with a 15A breaker) or 12 Gauge (with a 20A) breaker.
> That breaker typically supplies *multiple* 15A receptacles, with the idea
> that they aren't going to all draw their rated maximum at the same time (if
> ever).  And if they do, the breaker trips or the fuse blows to protect the
> wiring.
> >
> > So my question is, do other countries allow wiring with oversized
> breakers?  Why didn't Cheater's fuse/breaker save the day?  I would expect
> breakers in 240V countries to be even smaller thanks to Mr. Ohm.
> >
> > On Fri, Jan 14, 2022 at 8:13 AM Mike Bryant <mbryant at futurehorizons.com>
> wrote:
> >>
> >> 26 Amps is also marginal for the house wiring in many European
> countries.    Europeans never did understand the advantages of UK ring
> mains which are of course compulsory here in most situations :-)
> >>
> >> -----Original Message-----
> >> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of
> Gordonjcp
> >> Sent: 14 January 2022 13:55
> >> To: synth-diy at synth-diy.org
> >> Subject: Re: [sdiy] OT: Mains Safety PSA
> >>
> >> On Fri, Jan 14, 2022 at 12:33:06PM +0100, cheater cheater via Synth-diy
> wrote:
> >> > So as recent experience shows, 18 - 26 amps max continuous load for
> >> > months was a tad optimistic for this unknown brand Schuko wall socket,
> >>
> >> 18A is somewhat and 26A is grossly out of spec for Schuko.
> >>
> >> If you're going to pull that kind of power you need to look into
> getting a dedicated circuit and IEC60309 sockets fitted.  We use the 16A
> version for our "small" cabinets (where they mostly just power a single 24V
> rackmount PSU, with extra "UK plug" BS1363 sockets for plugging in test
> equipment.  For our server cabs we use the 32A version.
> >>
> >> You might want to use the 32A version, too.
> >>
> >> --
> >> Gordonjcp
> >>
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