John,
Is the 32A breaker an IRE requirement and every household must comply
regardless how old the house is? On one occasion, some UK engineers told me
that a small group of house in UK and EU still do not have such 32A breaker
installed. Thus the equipment complying with LVD Directive may not be safe in
abnormal operation.
Scott
-----Original Message-----
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Monday, December 12, 2016 1:50 PM
To: Ralph McDiarmid <ralph.mcdiar...@schneider-electric.com>;
EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] British question, about a BS1363 plug-in power supply
A 32 A breaker connects to a loop of 2.5 mm^2 3-core cable (line, neutral
and protective). A large number (there is a limit but it's complicated) of
13 A wall outlets can be connected to this ring, relying on diversity to
keep the total current below 32 A.
With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk
J M Woodgate and Associates Rayleigh England
Sylvae in aeternum manent.
-----Original Message-----
From: Ralph McDiarmid [mailto:ralph.mcdiar...@schneider-electric.com]
Sent: Monday, December 12, 2016 7:34 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] British question, about a BS1363 plug-in power supply
What's a "ring circuit" ?
Ralph McDiarmid
Product Compliance
Engineering
Solar Business
Schneider Electric
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Saturday, December 03, 2016 12:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] British question, about a BS1363 plug-in power supply
I understood the fuse in the U.K. plug was to protect the power cordage. In
the U.K., outlets are supplied by a ring circuit rather than a branch
circuit, therefore the power cord could exceed its ampacity (a U.S.A. term).
So, if no power cord, no need for a fuse in the plug.
I wonder if the power supply has a fuse to protect the power supply. If so,
would this count as the plug fuse?
Rich
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Saturday, December 03, 2016 5:01 AM
To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] British question, about a BS1363 plug-in power supply
I received a 5 W SMPS plug-in power supply as part of a multi-unit product.
It has interchangeable pins for EU, US, Australian and UK sockets, but it
has no fuse. I think this is illegal and intend to notify Trading Standards,
as the overall product is marketed by a prominent European company and is
widely offered on the Internet.
Is there any exemption at all for the requirement that a BS 1363 plug in any
form must have a fuse?
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