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From: John Woodgate
Subject: Re: IEC Mains lead. What fuse??
Date: Fri, 27 Sep 2002 07:40:58 +0100
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Fri, 27 Sep 2002 09:53:48 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Phil Allison
wrote (in ) about 'IEC
Mains lead. What fuse??', on Fri, 27 Sep 2002:
> Anyone even faintly familiar with how people treat appliances
>knows that a user accessable and replaceable fuse is NO safety device at
> It is simply an unknown quantity.
> If an appliance lead needs protecting for fire risk reasons then
>the device that does so should NOT be readily accessable to the user.
Well, our experience with the ring-main system over 50 years or so is
that it DOES work OK. We don't get the problems you envisage.
With centrally-fused spur wiring, the protection is by the fuse in the
fusebox. So when we had that system, we had equipment with 5A leads
(there are a few things allowed 2A leads - shavers and soldering irons,
for example) plugged into circuits fused at 15 A or even 'nail'.
Are houseowners allowed access to fuseboxes in Oz? Do they always repair
or replace a fuse correctly? Or does everyone have MCB boxes?
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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