EMC/PSTC'ers, I am researching the ampacity (current-carrying capacity, Leitung in German) of wires for Appendix F of my book, Robust Electronic Design Reference. A WECO catalog pointed me to VDE 0100 Part 253, and searching the Internet I also ran across a number of references to VDE 0298 Part 4 for the ampacity of wires and cables under various installation conditions. Some of the web pages that I found seem to mix values from these two standards, which is very confusing because they seem to differ by >10% for the same wire size, temperature rating for the insulation, ambient temperature, and installation condition (in conduit, in equipment, in cable, in free air).
I am willing to buy the standards to resolve this question (even though they seem to be available only in German, as paper copies) if I can find out which ones to buy. I think that I am looking for VDE 0100 part 523.6-81 (VDE 0100 Teil 523.6-81) with tables for Gruppe 1, Gruppe 2, and Gruppe 3 and Tables 3 and 4. Techstreet ( http://www.techstreet.com/ ) lists: * VDE 0100 dated 01-May-1973. <=== this one? * VDE 0100 Beiblatt 1 dated 01-Nov-1982. (Supplement 1) * VDE 0100 Beiblatt 2 dated 01-Mar-1983. (Supplement 2) * VDE 0100 Beiblatt 5 dated 01-Nov-1995. (Supplement 5) If VDE standards are like a lot of the EMC standards, supplements only give the information that has changed, so buying the wrong supplement would just be a waste of my time and money. Similarly, I think that I am looking for VDE 0298 part 4: * VDE 0298-100 dated 01-Dec-1992. * VDE 0298-3 dated 01-Aug-1983. * VDE 0298-300 dated 01-Feb-1997. * VDE 0298-4 dated 01-Aug-1995. <=== this one? I have E-mailed VDE directly, but don't know if/when I will get a reply >from them. Thanks! John Barnes KS4GL, PE, NCE, ESDC Eng, SM IEEE dBi Corporation http://www.dbicorporation.com/ (859)253-1178 phone (859)252-6128 fax 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
