| ampage Tube Amps / Music Electronics |
For current discussions, please visit Music Electronics Forum. |
ampage archive
Vintage threads from the first ten years
Magnet Wire Standards
:
 9/24/2002 5:49 PM |
|
Dr. Strangelove |
Magnet Wire Standards I love standards: there are so many to choose from. ...and you must pay for them. Magnet wire has assorted insulations and temperature classes that can be confusing, but all the magwire manufacturors list variations on specs called: J-W-1177, NEMA MW 1000, and IEC 60317 (or 317). J-W-1177, the most broadly cited, is a military spec that was cancelled, superceded, rescinded, chucked, and generally trashcanned in 1996. Manufacturors cite it but you can't get it anymore. See <http://apps.fss.gsa.gov/pub/fedspecs/sort5c.cfm> (scowl, grumble) NEMA, the National Electrical Manufacturors Association, will gift you with the MW 1000, a 500 page doc, for a mere $171 but the concise version MW 1000- 1997 (Revision 5) is only $82. Stare with mouth agape at <http://www.nema.org/index_nema.cfm/644/> (steam trickles from ears) IEC, the International Electrotechnical Commission in Switzerland, furnishes a dozen or so individual documents plus amendments plus revisions for every different mag wire insulation for a buck a page. Prices range about $20-27 EACH!...but they'll only take Swiss Francs. Blithely ignore <http://www.iec.ch/index.html> @#$%&* them and the horse they rode in on (but I mean it in a positive way). My conclusion? Same as Leo Fender's over 50 years ago: use what's cheap and plentiful. For Leo, it was plain enameled wire and later Formvar. For me, it's solderable polyurethane wire, class 155. -drh -- |
|---|---|
| Page 1 of 1 |