Ron, Thank you. I appreciate the reference to the NEC!
taniagr...@msn.com ----- Original Message ----- From: acar...@uk.xyratex.com Sent: Monday, October 29, 2001 4:09 AM To: Tania Grant Cc: WELLMAN,RON (A-PaloAlto,ex1); emc Subject: Re: skinny power cords. Tania The V in SVT does indeed stand for Vacuum and not Vinyl. In reference to the Trade name of this type of cable being Vacuum cleaner cord not suitable for hard usage. Article 400 of the NEC, page 70-211 to 70-224 ( in the 1999 edition) defines all the US cordage definitions. What the letters mean and what use the cordage is suitable for. Tania Grant wrote: Ron, I am a bit confused;-- you stated " SVT is for vacuum cleaners, not consumer products."Is not a vacuum cleaner a consumer product??? I may be wrong, but I thought that the "V" in the SVT designation stands for "vinyl", a soft and flexible insulation. Since many vacuum cleaning cords are automatically wound inside the appliance, that suits the application quite well. SJT cords, on the other hand, are more stiff; however, they are also used with consumer products. Perhaps someone else can shed more specific light on the various U.S. power cord applications and their respective nomenclature. I know that in the SJTO designation, the "O" stands for resistance to Oil, and that such cords are recommended (required?) in industrial areas where oil would likely be present, such as in car garages, etc. Tania granttaniagr...@msn.com ----- Original Message ----- From: WELLMAN,RON (A-PaloAlto,ex1) Sent: Sunday, October 28, 2001 6:50 AM To: emc Subject: RE: skinny power cords. In North America we rate cordage according to usage. The probability of crushing a cord is dependent on its usage and the selection of the cordage type by the manufacturer. I have seen many IT manufacturers use SVT cordage in North America. In my opinion SVT cordage is chosen instead of SJT just to save money. SVT is for vacuum cleaners, not consumer products. So, would fusing a plug in the USA/Canada be needed? I say no because we have a working system to rate cordage according to usage. If people choose to abuse the system, they assume the risk and liability for doing so. Regards, +=================================================================+ |Ronald R. Wellman |Voice : 408-345-8229 | |Agilent Technologies |FAX : 408-553-2412 | |5301 Stevens Creek Blvd., |E-Mail: ron_well...@agilent.com| |Mailstop 54L-BB |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: Nick Rouse [mailto:100626.3...@compuserve.com] Sent: Friday, October 26, 2001 2:11 PM To: emc Subject: Fw: skinny power cords. ----- Original Message ----- From: "Nick Rouse" <100626.3...@compuserve.com> To: "WELLMAN,RON (A-PaloAlto,ex1)" <ron_well...@agilent.com> Sent: Friday, October 26, 2001 9:52 PM Subject: Re: skinny power cords. > Earlier on in the thread it was not about arcing across the pins of a plug > but about the dangers or having a power cord rated lower than the > protection in the supply. Damage to the cord such as squashing it under > the legs of furniture or repeated flexing or overloads in simple unfused > equipment like table lights can cause overheating in the cord that will not > trip out the circuit protection. > Fused plugs do allow thin power cords to be used safely from supplies that > have a high rated current, In the UK power outlets are on a ring protected > by a 30A or 50A fuse or breaker. > > Nick Rouse > > ---- Original Message ----- > From: "WELLMAN,RON (A-PaloAlto,ex1)" <ron_well...@agilent.com> > To: <emc-p...@majordomo.ieee.org> > Sent: Friday, October 26, 2001 3:05 PM > Subject: RE: skinny power cords. > > > > > > > > Hello all, > > > > Earlier on in this thread it was eluded that this problem was leading to > the > > need of fused power plugs, similar to what is done in the UK. However, > based > > on the analyses of several people, I do not see how a fused plug would of > > prevented the failure that Robert experienced. > > > > Regards, > > +=================================================================+ > > |Ronald R. Wellman |Voice : 408-345-8229 | > > |Agilent Technologies |FAX : 408-553-2412 | > > |5301 Stevens Creek Blvd., |E-Mail: ron_well...@agilent.com| > > |Mailstop 54L-BB |WWW : http://www.agilent.com | > > |Santa Clara, California 95052 USA| | > > +=================================================================+ > > | "Common sense is the collection of prejudices acquired by age | > > | eighteen." - Albert Einstein | > > +=================================================================+ > > > > ------------------------------------------- > > This message is from the IEEE EMC Society Product Safety > > Technical Committee emc-pstc discussion list. > > > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > > > To cancel your subscription, send mail to: > > majord...@ieee.org > > with the single line: > > unsubscribe emc-pstc > > > > For help, send mail to the list administrators: > > Michael Garretson: pstc_ad...@garretson.org > > Dave Heald davehe...@mediaone.net > > > > For policy questions, send mail to: > > Richard Nute: ri...@ieee.org > > Jim Bacher: j.bac...@ieee.org > > > > All emc-pstc postings are archived and searchable on the web at: > > No longer online until our new server is brought online and the old > messages are imported into the new server. > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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