>>This relaxes the joint pressure, air gets in, and alu does what it normally does when exposed to the oxygen in the air, form an insulating film with 100% coverage, and a 30-50 volt breakdown in about one millisecond. Alu is great, in its place, but inside an electrical box of any kind its just a damned fire starter with a long fuse timing. <<
While I agree that copper is much superior to alum. and alum wiring when used in places like house wiring didn't turn out so well, however alum power cable is pretty much the standard for service entrances. Also many panel power components are made of alum - often with plating to prevent the oxidatation problems. It's like everything else, if you do it the right way, no problems, ignore the rules and they will come back and bite you. Most alum terminal blocks and even the grounding/neutral bars you can buy at home depot etc are either tin plated copper or tin plated alum. The ones I have used before are tin plated copper. They work great and they are cheap. Dave ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
