In a message dated 8/31/2007 3:14:15 P.M. Eastern Daylight Time, [log in to unmask] writes: Why is it that it is much easier to burn down a house with poorly made aluminum wire connections than the same with copper? Guess I thought junctions of copper to aluminum built up aluminum oxide, and that is resistive (as in alumina ceramic substrates). Driving a fairly small amount of current across a bit of aluminum oxide creates a lot of heat (catching wood on fire). Denny Fritz ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------