RE: internet information (worldwide electricity supplies)
I haven't checked the WEBsite (I avoid visiting WEBsites unless there is a terrible need to know) so I don't know what exactly is there. However, quite often, the useful information to have is what the permissable variations in the Electrical supply are in various parts of the world. At one time I had such a list for North America and it helped considerably in product design. My understanding is that with the privatization of the North Amercan electricity generation and distribution, the private sector operators are now establishing norms for how much deviation they will allow in the DESIGN characterisitics of a power generating and/or distribution entity, before they will let such a [provider connect to their network. (Supply contracts tend to have terrible penalty clauses for the power going down or off). These norms overall, are not in the public domain because the operators of all manner of networks have come to the realization that too much standard, makes their facilities more vulnerable to cyber attacks. Ciao, Vic Boersma
RE: RE: internet information
Laura, The gauge you listed is 0.75 sq-mm which is suitable up to 6 amperes according to IEC 60335-1. Also, check EN 60799 for more information on cord sets. BTW. Who is your cord set supplier? Regards, +=+ |Ronald R. Wellman|Voice : 408-345-8229 | |Agilent Technologies |FAX : 408-345-8630 | |5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com| |Mailstop 51L-SQ |WWW : http://www.agilent.com | |Santa Clara, California 95052 USA| | +=+ | Common sense is the collection of prejudices acquired by age | | eighteen. - Albert Einstein | +=+ -Original Message- From: Non-HP-LNewton /HP-PaloAlto,mimegw3/dd.HPMEXT1=lnew...@hach.com Sent: Wednesday, November 17, 1999 11:55 AM To: Non-HP-Chris.Colgan /HP-PaloAlto,mimegw3/dd.HPMEXT1=chris.col...@tagmclarenaudio.com; Non-HP-LNewton /HP-PaloAlto,mimegw3/dd.HPMEXT1=lnew...@hach.com; Non-HP-emc-pstc /HP-PaloAlto,mimegw3/dd.HPMEXT1=emc-p...@ieee.org Cc: Non-HP-LNewton /HP-PaloAlto,mimegw3/dd.HPMEXT1=lnew...@hach.com Subject: RE: internet information We are trying to determine the proper fusing for the UK power cord. The products we will be using the cord set on will never exceed 3amps in normal operating conditions. For the power cord set the Manufacturer has provided us with the following information: BSI/ASTA Approved British Male to International Female, HO3VVF3G0.75 Unshielded, Length: 8', Color: Black. The Manufacturer has asked us to specify a fuse of either 5A or 10A, with the information above how can we determine on whether a 5A or a 10A fuse should be used being that the gauge was not listed? Thanks a lot for the previous help and also thanks in advance for any help you can give me, -Laura -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: Wednesday, November 17, 1999 2:42 AM To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org' Subject: RE: internet information Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Laura BS1363, table 2 gives the maximum fuse rating for certain sizes of cable. Cord sizeRated current Fuse rating 0.50mmsq 3A 3A(5A)* 0.75mmsq 6A 13A 1mmsq 10A 13A 1.25mmsq 13A 13A 1.50mmsq 13A 13A *The figure in brackets indicates the fuse rating when a non-rewireable plug/cord assembly is used with certain types of equipment where the use of a 5A fuse link is necessary because of high instantaneous input current. There would be no problem with fitting the plug with a 5A fuse provided it can withstand the inrush current of your product. Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 17 November 1999 19:55 To: 'Colgan, Chris'; Laura Leyba-Newton; 'emc-p...@ieee.org' Subject: RE: internet information We are trying to determine the proper fusing for the UK power cord. The products we will be using the cord set on will never exceed 3amps in normal operating conditions. For the power cord set the Manufacturer has provided us with the following information: BSI/ASTA Approved British Male to International Female, HO3VVF3G0.75 Unshielded, Length: 8', Color: Black. The Manufacturer has asked us to specify a fuse of either 5A or 10A, with the information above how can we determine on whether a 5A or a 10A fuse should be used being that the gauge was not listed? Thanks a lot for the previous help and also thanks in advance for any help you can give me, -Laura -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: Wednesday, November 17, 1999 2:42 AM To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org' Subject:RE: internet information Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) = Authorised on 11/18/99 at 10:41:38; code 37f48bf382EE66CF. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs
RE: internet information
Sorry to add to the confusion, but the British trade association FEI publishes a document on periodic safety checks for business equipment, which includes a table of conductor sizes and fuse sizes for British plugs, with the following note: BS 1363 specifies only the use of 3 A or 13 A fuses. Conditions applicable to using a 5 A fuse with a 0.5 mm2 conductor are given in BS 1363. This seems to tie up with my (old) copy of BS1363, which specifies a 3A fuse for 0.5mm2 cord, and a 13A fuse for 0.75, 1.00, 1.25 and 1.50 mm2 cords. Adjacent to the 3A fuse rating for 0.5 mm2 cord is (5); with a note that the figure in brackets indicates the fuse rating where a non-rewirable plug/cord assy is used with certain types of equipment where the use of a 5A fuse link is necessary because of the high instantaneous input current. If anyone has the latest version of BS 1363:1984, or BS 1363:Part 1:1995, they could confirm the above. I note that in the BSI catalogue, under the entry for BS 1362 (fuses for BS 1363 plugs), it states for use in plugs complying with BS 1363, the preferred current ratings are 3A and 13A. John Crabb, Development Excellence (Product Safety) , NCR Financial Solutions Group Ltd., Kingsway West, Dundee, Scotland. DD2 3XX E-Mail :john.cr...@scotland.ncr.com Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. VoicePlus 6-341-2289. -Original Message- From: Chris Duprés [SMTP:chris_dup...@compuserve.com] Sent: 17 November 1999 23:36 To: Laura Leyba-Newton Cc: emc-pstc Subject: RE: internet information Hi Laura. You mention wire type: HO3VVF3G0.75 This looks like 0.75mm2 cross section area cable, and should be protected by a 5A fuse. Chris Duprés Surrey, UK. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Hi Laura, You can fit a 3 amp fuse in the fuse safely unless you have other technical specification on your product, i.e., high inrush current required. With 0.75 sq mm cord given, the maximum permissible current is 6A but the harmonised standard allows 10A in line with other European countries. I also take a note from BEAB saying that 13A fuse is allowed with 0.75 sq mm cord on their approved products. However, no specific explanation was given. Hope above information is useful to you. Raymond Li = Laura Leyba-Newton lnew...@hach.com on 18/11/99 03:54:31 a Please respond to Laura Leyba-Newton lnew...@hach.com To: 'Colgan, Chris' chris.col...@tagmclarenaudio.com, Laura Leyba-Newton lnew...@hach.com, 'emc-p...@ieee.org' emc-p...@ieee.org cc:(bcc: Raymond Li/DixonsNotes) Subject: RE: internet information We are trying to determine the proper fusing for the UK power cord. The products we will be using the cord set on will never exceed 3amps in normal operating conditions. For the power cord set the Manufacturer has provided us with the following information: BSI/ASTA Approved British Male to International Female, HO3VVF3G0.75 Unshielded, Length: 8', Color: Black. The Manufacturer has asked us to specify a fuse of either 5A or 10A, with the information above how can we determine on whether a 5A or a 10A fuse should be used being that the gauge was not listed? Thanks a lot for the previous help and also thanks in advance for any help you can give me, -Laura -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: Wednesday, November 17, 1999 2:42 AM To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org' Subject: RE: internet information Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: internet information
Hi Nick, Many thanks for your time and explaination that gives me a new view of UK fused plug. Best regards, Raymond Li = Nick Rouse 100626.3...@compuserve.com on 18/11/99 06:13:48 a To: Raymond Li/DixonsNotes cc: Subject: Re: internet information - Original Message - From: raymond...@dixonsasia.com.hk To: John Allen john.al...@rdel.co.uk Cc: emc-p...@ieee.org Sent: Wednesday, November 17, 1999 3:20 PM Subject: RE: internet information John, I am very insterested in your explaination on fused plug requirement between the ring main supply system and branch or spur systems. Could you please shed more light on to me about the fused plug requirement on the ring main supply and a simply way to identify the said main supplies. Raymond Practically all UK domestic premises and the vast bulk of UK low power single phase outlets in commercial and light industrial premises use plugs and sockets to BS1363. They is a legal requirement for all new installations in domestic premises. If you have not come across them, they are jumbo sized square 3 pin plugs rated at a modest 13A. An essential part of the specification and design of this plug is that it contains a fuse to BS1362. As far as I am aware this design of fuse is not used anywhere else. The normal way to wire up domestic premises in the UK is to use a ring main system. Typically all the socket outlets on each floor are connected to a ring of two conductor plus earth cable that runs from the fuse box around the rooms on that floor and back to the fuse box. Heavy current devices such as cookers and water heaters are wired separately as is fixed lighting. Each ring main is protected at the fuse box by a fuse or circuit breaker that is rated for the wiring of the ring main, typically 30A or 50A. A large proportion of electrical fires in domestic premises are caused by damage to the power cord between the wall socket and the appliance. If the insulation of low current rated power cords is damaged it is quite possible to have a partial short circuit in the cable that allows sufficient current to flow through the cable to cause serious overheating without taking out the high rated fuse protecting the ring main. Since this current is not flowing in the appliance, the fuses there are of no help. In industrial wiring practice it is normal to insert a fuse or breaker every time a low current rated spur is taken off a higher rated feed at the point it is spurred off. In this way all cable is protected by a fuse appropriate to the rating of the cable. This principal is extended to domestic wiring in the UK. Because it is not known in advance what the rating of the power cord plugged into any wall socket will be, the fuse cannot be fitted in the socket. It is therefore fitted in the plug. This system has the advantage that low rated cords can be used safely for low rated appliances. You ask how to distinguish between ring and spur circuits. This question does not normally arise for suppliers of equipment to the UK market. UK law requires that all electrical appliances sold for domestic use are sold with a power cord fitted with a BS1362 plug containing a fuse appropriate to the rating of that power cord. These regulation also cover thing such as office equipment and personal computers that might reasonably be bought for domestic use. I hope this helps clear things up a bit for you Regards Nick Rouse - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Hi John, Sorry to ask such a big question. In fact, this is my first time to hear such technical explaination about why UK plug must be fused so I believe I can ask a right person for this question. In the past, I got a common answer from UK people saying that the UK mains plug is the most safe plug in the world as nearly no other plugs are equipped with fuse, i.e., US plug, VDE plug. Now I know there is other reason behind. Anyway, I deeply appreciate you have given a number of sources for my reference/study. Best regards, Raymond Li John Allen john.al...@rdel.co.uk on 18/11/99 12:41:40 a To: Raymond Li/DixonsNotes cc: emc-p...@ieee.org emc-p...@ieee.org Subject: RE: internet information Raymond I think you have asked a very big question - and unfortunately I do not have time to go into it! However, I also think that it has been discussed before in EMC-PSTC, and so I suggest that you ask Ed Price or Rich Nute if they can identify the previous threads for you to examine on the RCIC website. Additionally, I would recommend that you try the Interpower Components website (www.interpower.com) and request a copy of their Export Designers Reference and Catalogue 9. Page 16 thereof gives a brief resume of the need for fusing in UK BS1363 plugs. You could also review BS 7671Requirements for Electrical Installations - otherwise known as the IEE Wiring Regulations (which I believe you may use in Hong Kong) and its associated Guidebooks. Regards John Allen -- From: raymond...@dixonsasia.com.hk[SMTP:raymond...@dixonsasia.com.hk] Sent: 17 November 1999 15:20 To: John Allen Cc: emc-p...@ieee.org Subject: RE: internet information John, I am very insterested in your explaination on fused plug requirement between the ring main supply system and branch or spur systems. Could you please shed more light on to me about the fused plug requirement on the ring main supply and a simply way to identify the said main supplies. Thanks and regards, Raymond Li === John Allen john.al...@rdel.co.uk on 17/11/99 04:41:13 pm Please respond to John Allen john.al...@rdel.co.uk To: 'emc-p...@ieee.org' emc-p...@ieee.org, 'Laura Leyba-Newton' lnew...@hach.com cc:(bcc: Raymond Li/DixonsNotes) Subject: RE: internet information Laura All UK standard power cords require to be fused - regardless of the fusing in appliance to which they are connected - because we use a totally different building ring main supply system to most other countries which use branch or spur systems ! The main reason is that the power cord cross-sectional (0.75 - to 1.5 sq mm) area is much less than that of the ring main (2.5 to 4 sq mm) , and fuses have to be inserted wherever such a change occurs. Fusing in the appliance is to protect the appliance - not the power cord. Regards John Allen Racal UK PS: the previous threads are on the RCIC.com website. -- From: Laura Leyba-Newton[SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Hi Laura. You mention wire type: HO3VVF3G0.75 This looks like 0.75mm2 cross section area cable, and should be protected by a 5A fuse. Chris Duprés Surrey, UK. - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information (worldwide electricity supplies)
Dear Laura et al. I wasn't sure if it was yourself or someone else that had asked about worldwide electricity supply voltages and frequencies. Anyway a brief list can be viewed at the following link : http://www.ets-tele.com/tics/global/volt_freq.htm Best regards, Edward Fitzgerald Director Direct Tel. : +44 1202 20 09 22 GSM Tel. : +44 4685 33 100 European Technology Services (EMEA) Specialist Global Compliance and Regulatory Consultancy Regional Offices in Australia, Canada and the UK. Global Telecom / Radio Intelligence Site http://www.ets-tele.com/tics psst... spread the word ! -Original Message- From: Laura Leyba-Newton [mailto:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
We are trying to determine the proper fusing for the UK power cord. The products we will be using the cord set on will never exceed 3amps in normal operating conditions. For the power cord set the Manufacturer has provided us with the following information: BSI/ASTA Approved British Male to International Female, HO3VVF3G0.75 Unshielded, Length: 8', Color: Black. The Manufacturer has asked us to specify a fuse of either 5A or 10A, with the information above how can we determine on whether a 5A or a 10A fuse should be used being that the gauge was not listed? Thanks a lot for the previous help and also thanks in advance for any help you can give me, -Laura -Original Message- From: Colgan, Chris [mailto:chris.col...@tagmclarenaudio.com] Sent: Wednesday, November 17, 1999 2:42 AM To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org' Subject:RE: internet information Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Raymond I think you have asked a very big question - and unfortunately I do not have time to go into it! However, I also think that it has been discussed before in EMC-PSTC, and so I suggest that you ask Ed Price or Rich Nute if they can identify the previous threads for you to examine on the RCIC website. Additionally, I would recommend that you try the Interpower Components website (www.interpower.com) and request a copy of their Export Designers Reference and Catalogue 9. Page 16 thereof gives a brief resume of the need for fusing in UK BS1363 plugs. You could also review BS 7671Requirements for Electrical Installations - otherwise known as the IEE Wiring Regulations (which I believe you may use in Hong Kong) and its associated Guidebooks. Regards John Allen -- From: raymond...@dixonsasia.com.hk[SMTP:raymond...@dixonsasia.com.hk] Sent: 17 November 1999 15:20 To: John Allen Cc: emc-p...@ieee.org Subject:RE: internet information John, I am very insterested in your explaination on fused plug requirement between the ring main supply system and branch or spur systems. Could you please shed more light on to me about the fused plug requirement on the ring main supply and a simply way to identify the said main supplies. Thanks and regards, Raymond Li === John Allen john.al...@rdel.co.uk on 17/11/99 04:41:13 pm Please respond to John Allen john.al...@rdel.co.uk To: 'emc-p...@ieee.org' emc-p...@ieee.org, 'Laura Leyba-Newton' lnew...@hach.com cc:(bcc: Raymond Li/DixonsNotes) Subject: RE: internet information Laura All UK standard power cords require to be fused - regardless of the fusing in appliance to which they are connected - because we use a totally different building ring main supply system to most other countries which use branch or spur systems ! The main reason is that the power cord cross-sectional (0.75 - to 1.5 sq mm) area is much less than that of the ring main (2.5 to 4 sq mm) , and fuses have to be inserted wherever such a change occurs. Fusing in the appliance is to protect the appliance - not the power cord. Regards John Allen Racal UK PS: the previous threads are on the RCIC.com website. -- From: Laura Leyba-Newton[SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
John, I am very insterested in your explaination on fused plug requirement between the ring main supply system and branch or spur systems. Could you please shed more light on to me about the fused plug requirement on the ring main supply and a simply way to identify the said main supplies. Thanks and regards, Raymond Li === John Allen john.al...@rdel.co.uk on 17/11/99 04:41:13 pm Please respond to John Allen john.al...@rdel.co.uk To: 'emc-p...@ieee.org' emc-p...@ieee.org, 'Laura Leyba-Newton' lnew...@hach.com cc:(bcc: Raymond Li/DixonsNotes) Subject: RE: internet information Laura All UK standard power cords require to be fused - regardless of the fusing in appliance to which they are connected - because we use a totally different building ring main supply system to most other countries which use branch or spur systems ! The main reason is that the power cord cross-sectional (0.75 - to 1.5 sq mm) area is much less than that of the ring main (2.5 to 4 sq mm) , and fuses have to be inserted wherever such a change occurs. Fusing in the appliance is to protect the appliance - not the power cord. Regards John Allen Racal UK PS: the previous threads are on the RCIC.com website. -- From: Laura Leyba-Newton[SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Hi John When I typed that last statement I didn't believe it to be naive but obviously it was. I was surprised to find that quite a lot of countries use UK type plugs (see web sites below). Amongst them is Hong Kong although I believe that Hong Kong requires plugs to conform to BS1363. http://www.interpower.com/interpower/guide.htm http://www.bbc.co.uk/aberdeen/eng_info/world_mains_standards.shtml Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: John Allen [SMTP:john.al...@rdel.co.uk] Sent: 17 November 1999 12:51 To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org'; 'Colgan, Chris' Subject: RE: internet information Laura With respect to the last line of Chris Colgan's email: Be careful! In the UK we have seen a number of bogus power cords with 13A plugs which have no provision for fuses. Additionally, they are much narrower than BS1363-compliant plugs and have no insulating sleeving on the Line Neutral pins - so that it is easy to get your fingers on the Line Pin as you insert the plug in a socket-outlet! Obviously they have no BSI/ASTA certification markings and - also obviously - they are not legal in the UK! I believe that our local Trading Standards Officers are aware of the problem, but it has not - to my knowledge - received a great deal of publicity. Typically they seem to turn up with very cheap PC cases made in the Far East, but they could appear anywhere. My guess is that they were designed for countries where BS1363 sockets are used on radial/branch circuits covered by 15/16A fuses or breakers, and where the legal requirements on access to the pins are much less stringent than the UK - does anyone know where this might be? Regards John Allen Racal Bracknell UK PS: The above is not rumour - I have actually seen and examined items of the type I describe! -- From: Colgan, Chris[SMTP:chris.col...@tagmclarenaudio.com] Sent: 17 November 1999 09:41 To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org' Subject: RE: internet information Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject:internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system i mmediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your
RE: internet information
Laura With respect to the last line of Chris Colgan's email: Be careful! In the UK we have seen a number of bogus power cords with 13A plugs which have no provision for fuses. Additionally, they are much narrower than BS1363-compliant plugs and have no insulating sleeving on the Line Neutral pins - so that it is easy to get your fingers on the Line Pin as you insert the plug in a socket-outlet! Obviously they have no BSI/ASTA certification markings and - also obviously - they are not legal in the UK! I believe that our local Trading Standards Officers are aware of the problem, but it has not - to my knowledge - received a great deal of publicity. Typically they seem to turn up with very cheap PC cases made in the Far East, but they could appear anywhere. My guess is that they were designed for countries where BS1363 sockets are used on radial/branch circuits covered by 15/16A fuses or breakers, and where the legal requirements on access to the pins are much less stringent than the UK - does anyone know where this might be? Regards John Allen Racal Bracknell UK PS: The above is not rumour - I have actually seen and examined items of the type I describe! -- From: Colgan, Chris[SMTP:chris.col...@tagmclarenaudio.com] Sent: 17 November 1999 09:41 To: 'Laura Leyba-Newton'; 'emc-p...@ieee.org' Subject:RE: internet information Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system i mmediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Laura Re. the power cord. SI No.1768 requires UK consumer products to be fitted with a plug conforming to BS1363. Both BS1363 and SI 1768 require the plug to be fused. The fuse value is determined by the cross sectional area of the power cord conductors. I doubt that you could find an unfused UK power cord set anyway. Hope this helps Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Laura Leyba-Newton [SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject: internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). = Authorised on 11/17/99 at 09:42:16; code 37f48bf3F2F6C214. The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd, The Summit, 11 Latham Road Huntingdon, Cambs, PE18 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
RE: internet information
Laura All UK standard power cords require to be fused - regardless of the fusing in appliance to which they are connected - because we use a totally different building ring main supply system to most other countries which use branch or spur systems ! The main reason is that the power cord cross-sectional (0.75 - to 1.5 sq mm) area is much less than that of the ring main (2.5 to 4 sq mm) , and fuses have to be inserted wherever such a change occurs. Fusing in the appliance is to protect the appliance - not the power cord. Regards John Allen Racal UK PS: the previous threads are on the RCIC.com website. -- From: Laura Leyba-Newton[SMTP:lnew...@hach.com] Sent: 16 November 1999 18:36 To: 'emc-p...@ieee.org' Subject:internet information Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
Re: internet information
Hi Laura: Could someone please tell me where previous EMC and safety discussions are posted on the internet. emc-pstc messages are archived at: http://www.rcic.com/ Click on Virual Conference Hall. The archives can be searched by topic. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. Yes. The UK uses a ring wiring scheme such that the installation overcurrent protection cannot protect the power cord wires as is done in the North America branch wiring scheme. Therefore, to protect the power cord from overcurrent, the plug must include a fuse. (The plug fuse does NOT protect the load from overcurrent; this is a function of the product fuse.) Best regards, Rich - Richard Nute Product Safety Engineer Hewlett-Packard Company Product Regulations Group AiO Division Tel : +1 858 655 3329 16399 West Bernardo Drive FAX : +1 858 655 4979 San Diego, California 92127 e-mail: ri...@sdd.hp.com - From owner-emc-p...@ieee.org Tue Nov 16 16:57:16 PST 1999 Received: from hpsdlo.sdd.hp.com (hpsdlo-sw.sdd.hp.com [15.80.36.40]) by hpsdlfsg.sdd.hp.com with ESMTP (8.7.6/8.7.3 TIS 5.0/sdd epg) id QAA06833 for ri...@hpsdlfsg.sdd.hp.com; Tue, 16 Nov 1999 16:57:15 -0800 (PST) Received: from ruebert.ieee.org (ruebert.ieee.org [199.172.136.3]) by hpsdlo.sdd.hp.com (8.8.6 (PHNE_14041)/8.8.5btis+epg) with ESMTP id QAA21254 for ri...@sdd.hp.com; Tue, 16 Nov 1999 16:57:12 -0800 (PST) Received: by ruebert.ieee.org (8.9.3/8.9.3)id TAA00362; Tue, 16 Nov 1999 19:39:36 -0500 (EST) Message-ID: 7798e57399e3d211b116009027626952400...@lvexch1.lvl.hach.com From: Laura Leyba-Newton lnew...@hach.com To: 'emc-p...@ieee.org' emc-p...@ieee.org Subject: internet information Date: Tue, 16 Nov 1999 11:36:06 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2448.0) Content-Type: text/plain; charset=iso-8859-1 Sender: owner-emc-p...@ieee.org Precedence: bulk Reply-To: Laura Leyba-Newton lnew...@hach.com X-Resent-To: Multiple Recipients emc-p...@majordomo.ieee.org X-Listname: emc-pstc X-Info: Help requests to emc-pstc-requ...@majordomo.ieee.org X-Info: [Un]Subscribe requests to majord...@majordomo.ieee.org X-Moderator-Address: emc-pstc-appro...@majordomo.ieee.org Could someone please tell me where previous EMC and safety discussions are posted on the internet. Also I am interested to know if a detachable UK power Cord is required to be fused. Products using this line cord have integral fuses in both AC lines. You help would be greatly appreciated. -Laura - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators). - This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: unsubscribe emc-pstc (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
