Re: [PSES] Safety design of shutter opening

2018-07-18 Thread John Woodgate
*From: *John Allen <09cc677f395b-dmarc-requ...@ieee.org <mailto:09cc677f395b-dmarc-requ...@ieee.org>> *Reply-To: *John Allen mailto:john_e_al...@blueyonder.co.uk>> *Date: *Monday, 16 July 2018 at 3:45 PM *To: *mailto:EMC-PSTC@LISTSERV.IEEE.

Re: [PSES] Safety design of shutter opening

2018-07-18 Thread John Woodgate
I agree; it is unlikely, and a second error resulting in a shock multiplies the improbability, but the consequences could be fatal, so it is a matter for debate. It is practicable to eliminate it; the distance from the centre of the earth socket to the edge of the enclosure must exceed 21 mm.

Re: [PSES] Safety design of shutter opening

2018-07-17 Thread Scott Xe
>> >> Tigard, ORe 97281-3427 >> >> >> >> 503/452-1201 >> >> >> >> IEEE Life Fellow >> >> p.perk...@ieee.org >> >> >> >> *From:* Scott Xe >> *Sent:* Monday, July 16, 2018 9:48 AM >> *To:* EMC-P

Re: [PSES] Safety design of shutter opening

2018-07-17 Thread Ted Eckert
; EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Safety design of shutter opening You have misunderstood. The effect occurs with extension cables, usually fitted with four sockets in a line. It does not occur with wall sockets, even surface-mounted, because the sockets are large enough to prevent

Re: [PSES] Safety design of shutter opening

2018-07-17 Thread John Woodgate
EE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> *Subject:* Re: [PSES] Safety design of shutter opening Well, strictly, an electric shock incident would be a 'two-fault' situation - plug reversed AND conducting object inserted into the live socket. In general, two-fault situations are almos

Re: [PSES] Safety design of shutter opening

2018-07-17 Thread Ted Eckert
<mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] Safety design of shutter opening Dear Johns, Thanks for advice abt other countries using 13A plugs & sockets! Do they require specific approved bodies for issuing certification like UK? Regards, Scott From: John Allen <09c

Re: [PSES] Safety design of shutter opening

2018-07-17 Thread John Woodgate
1 IEEE Life Fellow p.perk...@ieee.org <mailto:p.perk...@ieee.org> *From:* Scott Xe mailto:scott...@gmail.com>> *Sent:* Monday, July 16, 2018 9:48 AM *To:* EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> *Subject:* Re: [PSES] Safety design

Re: [PSES] Safety design of shutter opening

2018-07-17 Thread Scott Xe
hutter opening > > > > Dear Johns, > > > > Thanks for advice abt other countries using 13A plugs & sockets! Do they > require specific approved bodies for issuing certification like UK? > > > > Regards, > > > > Scott > > > > *From: *John

Re: [PSES] Safety design of shutter opening

2018-07-16 Thread Douglas Nix
I call this a “solution by successive approximation.” :-D Doug Nix "Knowledge is the food of the soul." - Plato > On 16-Jul-18, at 13:26, Pete Perkins > <0061f3f32d0c-dmarc-requ...@ieee.org> wrote: > > This is a never ending process, approaching perfection asymptotically. -

Re: [PSES] Safety design of shutter opening

2018-07-16 Thread Pete Perkins
09cc677f395b-dmarc-requ...@ieee.org> > Reply-To: John Allen mailto:john_e_al...@blueyonder.co.uk> > Date: Monday, 16 July 2018 at 3:45 PM To: mailto:EMC-PSTC@LISTSERV.IEEE.ORG> > Subject: Re: [PSES] Safety design of shutter opening Also used in Malta and Cypru

Re: [PSES] Safety design of shutter opening

2018-07-16 Thread John Woodgate
uire specific approved bodies for issuing certification like UK? Regards, Scott *From: *John Allen <09cc677f395b-dmarc-requ...@ieee.org> *Reply-To: *John Allen *Date: *Monday, 16 July 2018 at 3:45 PM *To: * *Subject: *Re: [PSES] Safety design of shutter opening Also used in Malta

Re: [PSES] Safety design of shutter opening

2018-07-16 Thread Scott Xe
2018 at 3:45 PM To: Subject: Re: [PSES] Safety design of shutter opening Also used in Malta and Cyprus (even in “Turkish” Northern Cyprus IIRC!) – and then there is Gibraltar. John E Allen W. London, UK From: John Mcauley [mailto:john.mcau...@cei.ie] Sent: 16 July 2018 01:03 To

Re: [PSES] Safety design of shutter opening

2018-07-16 Thread John Allen
Also used in Malta and Cyprus (even in “Turkish” Northern Cyprus IIRC!) – and then there is Gibraltar. John E Allen W. London, UK From: John Mcauley [mailto:john.mcau...@cei.ie] Sent: 16 July 2018 01:03 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Safety design of shutter opening

Re: [PSES] Safety design of shutter opening

2018-07-15 Thread John Mcauley
McAuley From: Scott Xe Sent: 15 July 2018 23:32 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Safety design of shutter opening Thank you for the clarification. On Mon, 16 Jul 2018, 12:47 am John Woodgate, mailto:j...@woodjohn.uk> > wrote: GPS applies to anything; that

Re: [PSES] Safety design of shutter opening

2018-07-15 Thread Scott Xe
standard. > > > > According to LVD guidance, this type of product falls into LVD, not GPS. > John, how does this product relate to GPS? > > > > Thanks and regards, > > > > Scott > > > > *From: *John Woodgate > *Date: *Sunday, 15 July 2018 at

Re: [PSES] Safety design of shutter opening

2018-07-15 Thread John Woodgate
Woodgate *Date: *Sunday, 15 July 2018 at 10:53 PM *To: *Scott Xe , *Subject: *Re: [PSES] Safety design of shutter opening I believe that no-one thought of the possibility of a design that allowed that incorrect insertion. It is known to the responsible BSI committee, but of course it takes time

Re: [PSES] Safety design of shutter opening

2018-07-15 Thread Scott Xe
with such design if it meets the standard. According to LVD guidance, this type of product falls into LVD, not GPS.  John, how does this product relate to GPS? Thanks and regards, Scott From: John Woodgate Date: Sunday, 15 July 2018 at 10:53 PM To: Scott Xe , Subject: Re: [PSES] Safety design

Re: [PSES] Safety design of shutter opening

2018-07-15 Thread John Woodgate
I believe that no-one thought of the possibility of a design that allowed that incorrect insertion. It is known to the responsible BSI committee, but of course it takes time for the standard to be amended. Until it is, conformity to the existing standard cannot be denied. However, the

[PSES] Safety design of shutter opening

2018-07-15 Thread Scott Xe
> > I received a sample of portable extension sockets with a compliance > certificate of BS 1363-2. It is noted the slim enclosure design allows the > mains plugs to be inserted into the sockets up-side-down by mistake. In > such circumstance, only the earth pin is inserted and the plug opens