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From: "Phil Allison"
References: <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <3D9436F5.2D41D0EA@scazon.com>
Subject: Re: IEC Mains lead. What fuse??
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Date: Fri, 27 Sep 2002 22:47:19 +1000
NNTP-Posting-Date: Fri, 27 Sep 2002 22:35:51 EST
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"Paul Burke" wrote in message
> Phil Allison wrote:
> > ** A fuse box is not an appliance. You are obfuscating again.
> I don't think anyone was trying to get into arguments about what is an
> appliance and what isn't.
** Think again.
The point is protection. With a spur system,
> the only protection is the fuse/MCB in the box. That has to be rated for
> the most thirsty appliance allowed. With a ring main, and fuses at the
> appliance end, the protection is appropriate for the size of string
> attached. The main fuse protects the ring itself. The mains wiring is
> designed assuming that every outlet will not be loaded with the
> permitted maximum, usually a fair assumption.
> Since appliance lead failure is a common problem
** Do you mean a short?
(for example, where
> people run a lead under the carpet and then walk over it for years), it
> is arguable that this is the best you can do.
** There is no issue in case of a short - it blows the fuse anywhere.
The only arguable issue is overload. One not enough to blow the
main fuse but maybe enough to make the lead a fire hazard.
I suspect you have missed the (unstated and rather obscure )
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