Re: [PSES] HAR cable -v- BS 7671

2012-04-12 Thread Peter Tarver
Make that BS 7671 -Original Message- From: Peter Tarver Sent: Thursday, April 12, 2012 15:00 Hi. The UK are cosigners to the HAR agreement. However, BS 7671 calls out a number of BS standards for cables, but does not mention HAR cable. Can HAR cables be used in the UK and meet

Re: [PSES] HAR cable -v- BS 75671

2012-04-13 Thread Peter Tarver
From: John Woodgate Sent: Thursday, April 12, 2012 23:58 In message Peter Tarver writes: The UK are cosigners to the HAR agreement. However, BS 7671 calls out a number of BS standards for cables, but does not mention HAR cable. Any such reference should be in the BS cable standards

Re: [PSES] safety standard for PV-related stuff

2012-04-20 Thread Peter Tarver
Combiner boxes are in the scope of 62109-4, but this is a potential new work item on TC82's docket. For now, the guts would be subjected to whatever the guts normally would if the guts were components used elsewhere. Regards, Peter L. Tarver From: Brian Oconnell Sent: Friday, April 20, 2012

[PSES] Circuit breakers in Europe

2012-05-02 Thread Peter Tarver
Good day to all. We (on this list) have had discussions on the differences in the calibration characteristics of fuses certified for use in Europe versus North America. We also discussed fuses sizing for what in North America is called a branch circuit and that fuses in Europe are sized equal to

Re: [PSES] Circuit breakers in Europe

2012-05-03 Thread Peter Tarver
From: Brian Oconnell [mailto:oconne...@tamuracorp.com] Sent: Thursday, May 03, 2012 08:36 Not certain what OP is attempting, as wire gage is dependent on the fault calc found in electric code, and breaker rating is related to the distribution. In North America, barring circumstances

Re: [PSES] e-standard.org The cheapest standards in the world

2012-05-08 Thread Peter Tarver
Not UL clients; UL clients with current/active safety certifications. New clients must pay retail. Regards, Peter L. Tarver -Original Message- From: Brian Oconnell [mailto:oconne...@tamuracorp.com] Sent: Tuesday, May 08, 2012 14:23 The free stuff and this pricing is available

Re: [PSES] Circuit breakers in Europe (Continuous vs. Non-Continuous Loads)

2012-05-16 Thread Peter Tarver
Thank you all for your responses. I’ll clarify: The current being carried is close to 16 A. Wiring is appropriately sized for this current and the length of the circuit conductors. Should the “branch circuit” overcurrent protection be rated anything other than 16A and why? Some have

Re: [PSES] Circuit breakers in Europe (Continuous vs. Non-Continuous Loads)

2012-05-16 Thread Peter Tarver
In Europe, Jim? Regards, Peter L. Tarver *From:* Jim Morrison [mailto:jmorri...@qps.ca] *Sent:* Wednesday, May 16, 2012 09:47 If the device is marked 16 amps on the nameplate, the branch circuit would be 20 amps. A cord connected device marked 16 amps certified or listed (Canada/US)

Re: [PSES] Insulative barriers deposited on metal surfaces

2012-07-19 Thread Peter Tarver
I would also be very concerned about different coefficients of thermal expansion for the two materials and whether or not you can make a sprayed on ceramic coating hydrophobic. Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain

Re: [PSES] FW: [PSES] EU sets EMC limits for London Olympics

2012-08-09 Thread Peter Tarver
I’ve watched BBC News rebroadcast in the US. One thing BBC absolutely is not is politically unbiased. Peter Tarver *From:* Michael Derby [mailto:micha...@acbcert.com] *Sent:* Thursday, August 09, 2012 00:45 *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: [PSES] FW: [PSES] EU sets EMC limits

Re: [PSES] Ignition sources and exposure time

2012-08-15 Thread Peter Tarver
of meeting V-2? Or was it simply not tested for a vertical flammability classification because there was no perceived market (HB is good enough)? Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you

Re: [PSES] CE Marking Provoqium

2012-08-17 Thread Peter Tarver
There are several NRTLs in the US. Pick your poison. With some, you pays yer money and you takes yer chances. Peter Tarver *From:* Brian Ceresney [mailto:bceres...@delta-q.com] *Sent:* Friday, August 17, 2012 10:41 I agree with you Ralph. I’d like to see that type of approach here

Re: [PSES] CE Marking Provoqium

2012-08-17 Thread Peter Tarver
which only applies to the work place. From: Brian Oconnell [mailto:oconne...@tamuracorp.com] Sent: Friday, August 17, 2012 16:09 29 CFR 1910 This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an

Re: [PSES] CE Marking Provoqium

2012-08-17 Thread Peter Tarver
at one another in front of fawning/deriding press and enriching themselves and their campaign donors. Peter Tarver - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message

Re: [PSES] CE Marking Provoqium

2012-08-18 Thread Peter Tarver
this company small. I could speculate as to what other special considerations might have been found self certifiable. I'd like to hear other stories of the self certification regime. Peter Tarver - This message is from

Re: [PSES] CE Marking Provoqium

2012-08-21 Thread Peter Tarver
been required at the Federal level. Peter Tarver From: Brian Ceresney [mailto:bceres...@delta-q.com] Sent: Tuesday, August 21, 2012 12:25 To add to the discussion, I believe that in 2009, the Province of Ontario, Canada intended to initiate a program forcing manufacturing

Re: [PSES] RoHS Question

2012-09-13 Thread Peter Tarver
products are not, strictly speaking, required to comply with the RoHS recast now, if they were out of scope previously. These products are allowed to apply the CE mark until mid 2019. Regards, Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain

[PSES] HAR cable designation question

2012-10-11 Thread Peter Tarver
Hello from overcast Northern California. I recently purchased a copy of HD 361 to decode HAR cable designations. An example is: H05GG-F H = harmonized cable 05 = 300/500 V G = ethylene vinyl acetate conductor insulation G = ethylene vinyl acetate jacket F = flexible conductors (Class 5) My

Re: [PSES] HAR cable designation question

2012-10-11 Thread Peter Tarver
. Regards, Peter Tarver -Original Message- From: Aldous, Scott I did find a reference to this, though not from an official source: http://www.muellergroup.net/faq.html#10 This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged

Re: [PSES] HAR cable designation question

2012-10-15 Thread Peter Tarver
No, John, it isn't. From: John Woodgate Sent: Thursday, October 11, 2012 08:59 In message Peter Tarver, Thu,11 Oct 2012, writes: Does the same inside to outside approach also apply to the voltage rating, as I expect that it does? Isn't that specified in HD 361? This email message

Re: [PSES] VTM-2 Rated Film - Proper Electrical Barrier

2012-11-13 Thread Peter Tarver
fly. Peter Tarver *From:* Richard Pittenger [mailto:richard.pitten...@hobartcorp.com] *Sent:* Friday, November 02, 2012 11:21 Esteemed Colleagues, I have a product submitted to NRTL “E” that uses a Mylar electrical barrier between line-voltage (120 V ac), uninsulated live parts

Re: [PSES] VTM-2 Rated Film - Proper Electrical Barrier

2012-11-14 Thread Peter Tarver
(or to even warm water). The customer was told that the certification service would not be forthcoming, but I had to explain why. Whether it's considered a matter of fairness or a response to contracted services, some explanation is needed. Peter Tarver This email message is for the sole use

Re: [PSES] IEC 60320 C13/C14 Connector 10A vs 15A

2012-11-20 Thread Peter Tarver
with a 1-15P attachment plug. The C5/C6 couplers/inlets are very common for use with laptop computers having 5-15P attachment plug. Ted's comments apply. Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged

Re: [PSES] Telephone connection accessories

2012-11-26 Thread Peter Tarver
Systems. Peter Tarver -Original Message- From: Nick Williams [mailto:nick.willi...@conformance.co.uk] Sent: Friday, November 23, 2012 06:13 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Telephone connection accessories Esteemed colleagues, What are the appropriate standards

Re: [PSES] Recast of RTTE directive

2013-02-22 Thread Peter Tarver
receivers will be subject only to the LVD and RTTE. Brussels, 17.10.2012 COM(2012) 584 final 2012/0283 (COD) Peter Tarver *From:* Elliott Mac-FME001 [mailto:fme...@motorolasolutions.com] *Sent:* Monday, October 22, 2012 10:41 *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: [PSES] Recast of RTTE

Re: [PSES] Recast of RTTE directive

2013-02-22 Thread Peter Tarver
errr...yeah. Got interrupted by work that pays my salary. From: John Woodgate Sent: Friday, February 22, 2013 09:43 Fri,22 Feb 2013, Peter Tarver ptar...@enphaseenergy.com writes: I’m looking at the proposal now. What I gather from the first 8 pages (of 77) is that it removes all

[PSES] NRTL North of the 40th parallel

2013-03-01 Thread Peter Tarver
In case you haven't seen it yet, an NRTL/SCC lab has instituted invoicing practices where factory product audits will be billed separately for every global region from a financial entity in that region. Your companies will be burdened with having to add additional suppliers to your financial

Re: [PSES] What are the any local utility requirement for grid tied equipment in USA?

2013-04-05 Thread Peter Tarver
not demand the full output of the device) Thank you for your help. Bin Bin - IEEE 1547 is the base line. As you enter a utility's area of operation, you will need to contact them to discover if they have any unique requirements for your company's technologies. Peter Tarver This email message

Re: [PSES] protective bonding test at 12V

2013-04-08 Thread Peter Tarver
limit for safety. I can say that it's much simpler to drive high current at low voltage for the purposes of this test. For example, using a variable autotransformer on the high voltage side of a step down transformer operated in short-circuit mode. Peter Tarver This email message is for the sole

Re: [PSES] protective bonding test at 12V

2013-04-09 Thread Peter Tarver
in my prior labs, I’ve seen the voltage drop across the tested current path change with time, mostly due to heating effects. Less heating necessarily leads to a lesser resistance value, since resistance of any conductor is dependent on its temperature. Peter Tarver This email message

Re: [PSES] 3D passive glasses

2013-04-17 Thread Peter Tarver
system remote controls, cell phones, notebook or notepad computers, laptops, mp3 players ... Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review

[PSES] HAR factories for marked cable

2013-04-24 Thread Peter Tarver
Good afternoon. A cable supplier has mentioned that cables cannot bear the HAR marking if they are not manufactured within an EU country. This seems to be buried in HAR agreement documents that are out of my reach. Can anyone confirm this? Regards, Peter L. Tarver This email message is for

Re: [PSES] HAR factories for marked cable

2013-04-25 Thread Peter Tarver
. Regards, Peter Tarver *From:* safetyl...@gmail.com [mailto:safetyl...@gmail.com] *On Behalf Of *Arthur Michael *Sent:* Wednesday, April 24, 2013 20:14 *To:* Peter Tarver *Cc:* EMC-PSTC@listserv.ieee.org *Subject:* Re: [PSES] HAR factories for marked cable Hi Peter et al, Here

[PSES] UL warning regarding a wall receptacle

2013-05-06 Thread Peter Tarver
UL warning regarding a wall receptacle (socket outlet) http://www.nema.org/News/Pages/UL-Warns-of-Potentially-Hazardous-Receptacl e.aspx I'm not aware if mixing of voltages is allowed in a duplex receptacle (I suspect it is not, since wiring errors become more likely and segregation of wiring

Re: [PSES] UL warning regarding a wall receptacle

2013-05-06 Thread Peter Tarver
)) Peter Tarver -Original Message- From: John Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Monday, May 06, 2013 10:11 To: 'Peter Tarver'; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: UL warning regarding a wall receptacle Peter Whilst the link to the UL press release works

Re: [PSES] UL warning regarding a wall receptacle

2013-05-06 Thread Peter Tarver
receptacle with USB outlets in their listings for outlets. In such cases, I suspect the USB portion requires no field wiring and that the USB portion replaces one outlet from a duplex configured device. Is this accurate? Regards, Peter Tarver This email message is for the sole use

Re: [PSES] UL warning regarding a wall receptacle

2013-05-07 Thread Peter Tarver
too much electricity, and so Google can let you know when you need to buy more certified organically produced, free trade soy-milk. Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you

Re: [PSES] safety 60950 and surge suppression circuits

2013-05-21 Thread Peter Tarver
of fulfilling their intended functions. This view is similar in concept to allowing a dc test when capacitances will allow excess currents to flow during the same tests. Your answer sells better in committee. Peter Tarver -Original Message- From: Richard Nute Hi Joe: Very quickly

[PSES] Looking for an alternative to SII in Israel

2013-07-18 Thread Peter Tarver
Photovoltaic inverters and related equipment. Poor service and lousy communications are leading me to consider a move. Any input will be accepted. Regards, Peter L. Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged

Re: [PSES] 60950 1st edition and amendments

2013-07-18 Thread Peter Tarver
*From:* McInturff, Gary [mailto:gary.mcintu...@esterline.com] *Sent:* Thursday, July 18, 2013 16:23 Anybody know the Docopocoss (or whatever on that) on IEC 60950-1:2001, First Edition Gary – *EN** *60950-1:2001 lost favor on 1DEC2010. You owe John Woodgate a nickel. Peter Tarver

Re: [PSES] 60950 1st edition and amendments

2013-07-19 Thread Peter Tarver
, there was about a 3 1/2 year transition window. Peter Tarver -Original Message- From: McInturff, Gary [mailto:gary.mcintu...@esterline.com] Sent: Friday, July 19, 2013 08:06 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] 60950 1st edition and amendments Ha now I'm getting new

Re: [PSES] breakage of the fuse

2013-08-07 Thread Peter Tarver
. If each successive fuse replacement uses the same fuse, more of the same may result. If the product isn't returned for replacement or discarded, the fuse might eventually be replaced with a larger rated fuse with possible further degradation of safety. Peter Tarver This email message

Re: [PSES] breakage of the fuse

2013-08-08 Thread Peter Tarver
glass tube fuses crack, ferrules become dislodged (even on solder in place fuses), when the interrupting (breaking) capacity was too low for an application in end-product equipment. I'm glad the fuse will be replaced with another, more approriate type. Peter Tarver This email message

Re: [PSES] Standard for testing of high voltage penetrators

2013-09-03 Thread Peter Tarver
You can check CENELEC’s TC 20 web site. Regards, Peter Tarver *From:* Niels Hougaard [mailto:n...@bolls.dk] *Sent:* Thursday, August 29, 2013 07:23 *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* [PSES] Standard for testing of high voltage penetrators Dear list members, High voltage

Re: [PSES] Norwegian RF Study

2013-09-03 Thread Peter Tarver
in further research. Regards, Peter Tarver *From:* Ed Price [mailto:edpr...@cox.net] *Sent:* Thursday, August 29, 2013 05:11 *To:* EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* [PSES] Norwegian RF Study *The Norwegian Institute of Public Health released a study of electromagnetic exposure

Re: [PSES] Wire ampacities -

2013-09-04 Thread Peter Tarver
at an elevated temperature, etc. Regards, Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you

Re: [PSES] question on clause 6.3 and 1.4.11 of IEC60950-1

2013-09-13 Thread Peter Tarver
in telecommunications networks, in particular modular plugs/jacks, line cords and the like. Regards, Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may

Re: [PSES] 答复: [PSES] question on clause 6.3 and 1.4.11 of IEC60950-1

2013-09-16 Thread Peter Tarver
in this thread. Regards, Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message

Re: [PSES] question on clause 6.3 and 1.4.11 of IEC60950-1

2013-09-16 Thread Peter Tarver
. Regards, Peter Tarver This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error

Re: [PSES] question on clause 6.3 and 1.4.11 of IEC60950-1

2013-09-17 Thread Peter Tarver
. Regards, Peter Tarver -Original Message- From: Zhangguoqing (A) [mailto:zhangguoq...@huawei.com] Sent: Monday, September 16, 2013 19:05 To: Peter Tarver; EMC-PSTC@LISTSERV.IEEE.ORG Subject: 答复: [PSES] question on clause 6.3 and 1.4.11 of IEC60950-1 Dear Peter, Thanks for your reply

[PSES] 60332-1-2

2011-11-28 Thread Peter Tarver
I've received feedback that NF C 100-15 (France wiring rules) requires testing against either NF C 32-070 (France) with resulting ratings of C1 or C2, or against EN 60332-1-2, for all nonresidential locations. The scope of the EN 60332-1-2 indicates vertical flame spread testing is performed (I

RE: NEBS Compliant Components

2008-08-12 Thread Peter Tarver
coordination. For component manufacturers that are not specifically targetting the telecom market, it's highly unlikely you'll find satisfaction. Beware the specter of 'designed to meet.' Peter Tarver, PE ptar...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc

GR-950-CORE Salt Fog Test

2008-08-26 Thread Peter Tarver
Can anyone comment on the periods of real world exposure the tests (30 days or 60 days) the test is intended to represent? One reference I found points to ASTM B117, but I don't have access to that standard to see if it's contained in there. Peter Tarver ptar...@ieee.org - This message

Re: ILEC RoHS-6 news from the NEBS conference?

2008-10-17 Thread Peter Tarver
in the Telecommunication Carrier Group from draft standards into which, I've heard, Verizon did not direct significant energy. Peter Tarver ptar...@ieee.org On 17 Oct 2008 at 9:48, Marko Radojicic wrote: Hello group, I could not attend the NEBS conference this year and was hoping to get some input

Re: GIFS on the EMC-PSTC list

2008-11-14 Thread Peter Tarver
-bang and poorly formatted and nonstandard html mail. If such tings are important to a post, a reference to a web page should be sufficient (people have had web browsers from the ancient days *before* 1999). Peter Tarver, PE ptar...@ieee.org the curmudgeonly Luddite and technological apostate

Re: GIFS on the EMC-PSTC list

2008-11-14 Thread Peter Tarver
This could be an excellent application for a poll on the EMC-PSTC Community web site. Peter Tarver, PE ptar...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e

FWDhelp

1996-06-24 Thread Peter Tarver
Mail*Link¨ SMTP FWDhelp Doe sanyone out there know where Paul is and can check up on him? Peter Tarver Northern Telecom peter_tar...@nt.com -- List-Post: emc-pstc@listserv.ieee.org Date: 6/21/96 6:06 AM From: Paul Reilly - E X T E R N A L L Y O

Industrial Plug and Socket

1996-05-29 Thread Peter Tarver
Tom Bao asks about what configurations make products Pluggable Equipment Type B. Where North America is concerned, this was discussed at UL and it was essentially determined that any attachment plug other than , ANSI/NEMA 1-15P, 5-15P and 5-20P (the 125V, 15A and 20A plugs) makes ITE Pluggable

Re: FW: Infrared Viewers

1996-05-23 Thread Peter Tarver
Reply to: REFW: Infrared Viewers Keith - While I don't have any direct experience with IR imagers and their related analysis software, I would suggest getting your hands on some trade magazines, such as Photonics Spectra, Lasers and Optronics, etc. There are at least a few vendors

Re: Merger of Component Man

1996-05-03 Thread Peter Tarver
Reply to: REMerger of Component Manufactures All - While the emphasis in this discussion has been on ways to bandaid(tm) reports to avoid FUS problems for OEMs, I see this as a problem with the way FUS is coordinated by the safety certifiers. While at UL, mergers of companies proved

FWDRELimited Power Sourc

1996-04-26 Thread Peter Tarver
Reply to: FWDRELimited Power Source Egon H. Varju wrote: On 20/4/1996 Kendal Wilcox wrote: I was discussing UL 1950/CSA950/EN60950 clause 2.11, Limited Power Source with a colleague, and we were looking at the Table 9 limits for maximum output current Isc (1000/Uoc)

RE: [Commercial (HazCom Solutions)]

1997-07-10 Thread Peter Tarver
This kind of commercial post is explicitly forbidden by the Charter of the EMC-PSTC listserver. Please don't do it again. Peter L. Tarver Nortel ptar...@nt.com -- From: Adrian Aldape[SMTP:b...@centuryinter.net] Sent: Wednesday, July 09, 1997 1:13 PM To:emc-pstc Subject:

RE: Spark-Gaps and clearance rules

1997-04-24 Thread Peter Tarver
Below, Bruce Hunter assumes Hans Mellberg is using an air gap comprised of traces on a printed wiring board. When I first read Hans' message, I thought he was discussing discrete components. I have seen both used, but would like to ask you, Hans, to clarify your application, before we get off on

RE: Class I laser . U.S. vs EN 60825

1997-06-09 Thread Peter Tarver
Bob - The limits are similar, but not identical, (yet). As to the failure mode considerations, IEC 825-1 contains requirements for imposing fault conditions on components and the like that might affect the laser class. This is probably the origin of the safety notice. Please note that fault

RE: Surge currents when powering up equipment..

1997-04-24 Thread Peter Tarver
The safety agencies will primarily look to see if the inrush will cause nuisance tripping of any overcurrent protection devices, including the branch circuit protection, and sometimes effects on additional earth leakage current. For your application, the North American agencies will assume branch

FW: Fire Enclosures

1997-04-25 Thread Peter Tarver
Richard - It is my understanding that if an enclosure is built in accordance with the construction specifications in the standard, it will already meet the requirement to prevent the spread of flames. No additional text needs to be added to the standard in this area and any attempt to do so will

RE: Interlock - PCB Spacings -- OPINION PLEASE

1997-06-24 Thread Peter Tarver
Well put, Chris. On this same topic, I've been curious for many years now about the suitability of Hall Effect sensors in interlock circuits. Any comments? Peter L. Tarver Nortel ptar...@nortel.com -- From: Chris Dupres[SMTP:chris_dup...@compuserve.com] Sent: Monday, June 23, 1997

RE: UL 1950 Clarification Needed

1997-06-26 Thread Peter Tarver
-- From: donne...@agcs.com [SMTP:donne...@agcs.com] Sent: Tuesday, June 24, 1997 12:29 PM I am wrestling with the concept of clearances as they apply to our -50Vdc power circuits in a telecom application. Looking at UL 1950 (3rd edition), Clause 3.4.1 says that the connections to a

RE: UL 1950, Clause 3.2

1997-07-08 Thread Peter Tarver
Relocatable power taps are considered temporary extensions of the branch circuit. They are not appliances and that is the crux of the issue. Placing any active electronic circuitry inside (I assume this is what you mean by contains other control circuits), other than passive surge and

RE: PCB Temperatures

1997-09-16 Thread Peter Tarver
Of equal concern for minor excessive temperatures, is that the bond strength of the copper on the PWB will be the first thing affected. The copper may pull away from the laminate due to thermal stresses and eventually result in high impedance connections. Such poor electrical connections could

FW: clearance IEC1010

1997-12-12 Thread Peter Tarver
When I sent this out, I selected reply to sender, rather than to all. Here's what Rich got. For your perusal. Peter L. Tarver Nortel ptar...@nt.com -- From: Tarver, Peter (P.T.) Sent: Friday, December 12, 1997 8:30 AM -- From: Rich Nute[SMTP:ri...@sdd.hp.com] Sent:

RE: The FDA and Laser Products

1997-12-08 Thread Peter Tarver
Doug, et al - The FDA is concerned about contacting a responsible company, should any incident(s) occur for any given product. This would be to affect recalls and/or repairs/modifications, etc., to Certified equipment. Also, this is intended to allow a user to contact the responsible company

RE: Hipot testing AND current

1997-12-08 Thread Peter Tarver
Further to Rich's comments... -- From: Rich Nute[SMTP:ri...@sdd.hp.com] Sent: Thursday, December 04, 1997 10:38 AM Hello Vagn: 1. Why do standards specify a minimum output current for hi-pot testers? deletia Another reason for a minimum current requirement is that some of the

RE: Re[2]: EN 60950 A5

1998-08-28 Thread Peter Tarver
right now, according to their latest literature. Jim __ Reply Separator _ Subject: RE: EN 60950 A5 Author: Peter Tarver peter.tarver.ptar...@nt.com at Internet Date:08/28/1998 1:51 PM Jim

RE: Are all these agencies really necessary?

1998-09-14 Thread Peter Tarver
Even though it wasn't you point, Daniel, it should be noted that the CB Scheme provides for participating NCBs to accept one anothers' test data, but by no means guarantees that an NCB reviewing a CB Scheme Test Report will not ask to perform some testing. The testing might be required by an NCB

RE: US NRTL required ?

1998-09-21 Thread Peter Tarver
Richard - For a long time, UL (and I believe CSA) thought any device deriving power from a Class 2 source needed listing. In fact, they were adamantly opposed to it, even when requests for such certification were made. UL's primary basis was that the NEC didn't care what was supplied by a Class

RE: Re[2]: US NRTL required ?

1998-09-24 Thread Peter Tarver
_ Subject: RE: US NRTL required ? Author: Peter Tarver peter.tarver.ptar...@nt.com at INTERNET Date:9/22/98 11:17 AM Require? No. Will they? Yes, under certain circumstances and certain product categories, like ITE. Laptops for instance

RE: Added paragraph

1998-10-09 Thread Peter Tarver
Better yet, how about the subscribers taking the additional two or three seconds it takes to do the responsible thing and delete it themselves? Peter L. Tarver Nortel ptar...@nt.com -Original Message- From: Robert Macy [SMTP:m...@california.com] Sent: Thursday, October 08, 1998 12:05

RE: Why are CB reports truly useful?

1998-11-24 Thread Peter Tarver
The key word below is allow. There is no requirement that one NCB accept the report of another NCB. I am aware of one case where a CB Scheme Test Report from one NCB was refused out of hand by another NCB in the same country (both shall remain nameless), without any rational qualification. I

Delta transformer grounding (was: RE: GFCI in IT (three phase) Ne tworks)

1998-03-06 Thread Peter Tarver
Doug - Delta-delta transformers are popular with the utilities for economy's sake (they are less expensive than WYE transformers) For similar reasons, some industrial applications distribute and use power within their plants on delta feeds. In office environments, however, it's typical to use a

RE: Delta transformer grounding (was: RE: GFCI in IT (three phase) Ne tworks)

1998-03-06 Thread Peter Tarver
:47 AM Peter Tarver wrote: Delta-delta transformers are popular with the utilities for economy's sake (they are less expensive than WYE transformers) For similar reasons, some industrial applications distribute and use power within their plants on delta feeds. In office environments

RE: Coated Printed Boards

1998-05-08 Thread Peter Tarver
Alan - I'm not certain about the origin of the application of Tables 3, 4 and 5 in your example, but since Tables 3, 4 and 5 generally have lesser distances for the same voltages than are found in Table 6, this seems primarily an academic exercise for which I'd need a specific safety concern to

RE: Query: US safety required for ITE?

1998-09-16 Thread Peter Tarver
To muddy the waters further, Ron, I offer a converse reminder: many Authorities Having Jurisdiction are still using versions of the NEC the precede the introduction of 800-4 (and the previous location of the same idea in the 1990 NEC that eludes me). I've known of some jurisdictions to use the

National Semiconductor

1998-12-23 Thread Peter Tarver
Happy holidays, to one and all. I am looking for a contact for product safety certifications at National Semiconductor. The operators at their Santa Clara facility are useless, unless you have a name. Regards, Peter L. Tarver, PE Nortel Networks ptar...@nortelnetworks.com - This

RE: Re[2]: Coupling Capacitors 950

1998-02-23 Thread Peter Tarver
Ron - Different UL standards have different requirements for these capacitors. It is my understanding that: UL1950 (ITE) does not have an issue specifically with UL1283 capacitors (yet) UL1459 (Telephone Equipment) does have requirements specifically requiring UL1414 capacitors (which if

RE: Sound Pressure Meter

1998-01-30 Thread Peter Tarver
Ned - Since you didn't mention your particular application, a good source for a very broad number of applications is Bruel Kjaer http:\\www.bk.dk Their regional US representatives moved to a central North American location Bruel Kjaer Division of Spectris Technologies

RE: isopropyl alcohol

1998-07-10 Thread Peter Tarver
Just to fill the pot with more speculation, my recollection of college chemistry tells me that alcohol readily absorbs moisture from the atmosphere, so that any container opened to normal atmospheric conditions for more than a few seconds will autodilute to somewhere around 93% (that's the number

RE: Wire Markings Mandatory?

1998-06-29 Thread Peter Tarver
Jim - Yes, that's pretty much how respooling works. The most odd aspect was that this was wiring already in a wiring harness, taken from a box with the appropriate wiring harness labeling. The FUS Rep wanted to see our drawings to verify the design of the harness, which is normal, but

RE: Wire Markings Mandatory?

1998-06-26 Thread Peter Tarver
In the following, I'll speak only to UL certified wire. To get an official reading, call the nearest UL office and ask for the client advisor, then ask them to direct you to an engineer working with wire and cable. One of the best resources for information about any UL product category is the

RE: Translations

1998-06-24 Thread Peter Tarver
A few safety type markings are translated into French in Annex NAA of CSA950/UL1950. Regards, Peter L. Tarver Nortel ptar...@nt.com -- From: ron_pick...@hypercom.com[SMTP:ron_pick...@hypercom.com] Sent: Tuesday, June 23, 1998 3:06 PM Hello from quite sunny

RE: Ground Wire Markings

1998-06-24 Thread Peter Tarver
A point of clarification here. UL Recognized AWM isn't required to be surface marked at all. The marking is perfectly legitimate if it is on the spool the wire is taken from. Yet another voice chiming in that it was probably not traceable as being R/C AWM. Regards, Peter L. Tarver Nortel

RE: CB scheme

1998-06-23 Thread Peter Tarver
Gary - You seem to be doing just fine for your current market. As you market expands (you mentioned GOST), however, the CB Scheme Test Report does offer portability to a greater degree than a lesser. Many of the agencies will want a sample for a looksee, a few may want to perform minor

RE: generating 50Hz power in the US

1998-06-15 Thread Peter Tarver
Richard - In addition to the previously mentioned manufacturers, there is also Behlman http://www.behlman.com/ also sold through Electro Venture http://www.electroventure.com/ Regards, Peter L. Tarver Nortel ptar...@nt.com -- From: Richard

RE: LEDs and the Laser standard - question

1998-04-30 Thread Peter Tarver
Heber - This may depend on who's doing the certification of your equipment. I've heard of certain agencies ignoring faceplate LEDs, but not yet of any wanting to test. According to Jerome Dennis of the CDRH (at the 1997 International Laser Safety Conference), discussions at the IEC TC76

RE: UL 1950 3rd, and IEC 950

1998-04-29 Thread Peter Tarver
As with many things in life, there is no simple answer to your whole question list, but I'll address what I can in a short form. A telco is a utility and normally a monopolistic entity. The systems and equipment the telco use are maintained (supposedly) to a much higher degree (at least inside

RE: NRTL Value

1998-04-28 Thread Peter Tarver
George - While I have not found myself in quite the same predicament as you describe, I have had good success with your Option D. This quite often clarifies the applicable requirements for a product's audit and has also quite often exposes misunderstanding on the part of the inspector as to what

RE: Use of MOV's ???

1998-04-21 Thread Peter Tarver
Jeff - This rumor doesn't make much sense as an across-the-board requirement, especially considering UL has a component product category for MOVs and other transient voltage surge suppressors, along with some product standards that allow reductions of over-surface and through-air electrical

RE: IEC 332 vs. CL2, CL2P, etc.

1998-04-01 Thread Peter Tarver
Mike - Hearsay alert but it may get this discussion rolling and I'm most certainly interested in the outcome. I don't have specifics on IEC 332 and I can not strictly testify to the accuracy of the following, but from discussions with a coworker in the UK, EEA countries generally dislike plenum

RE: Old Yokogawa meter for '950?

1999-11-30 Thread Peter Tarver
Jim - Most any calibratable voltmeter with 1000+ Ohms/V should work OK. The Ohms/V information should be on the indicator plate. Is there a specific test you're concerned about using this meter for, or is it for general applications? For the manual, try posting to sci.electronics.equipment and

RE: US NEC and Canadian CEC

1999-07-22 Thread Peter Tarver
Peter - These are all in the CEC and US NEC. You need to purchase one or both (they're significantly similar on all of your points in question). Regards, Peter L. Tarver, PE Homologation Engineering Nortel Networks ptar...@nortelnetworks.com -Original Message- From:

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