For related reading, there are reference materials from the Alumin(i)um Association. The handbook is a scanned copy of the 3rd edition (1989) and is large (21.5MB). Some of the other links may be helpful as well.
http://www.aluminum.org/resources/electrical-faqs-and-handbooks/electrical Regards, Adam in Atlanta On Tue, Dec 13, 2016 at 4:59 PM, Nyffenegger, Dave < [email protected]> wrote: > As was mentioned AL is still used for large conductors 50A or more for > stoves/ovens/range/generator hookup, feeders to additional breaker panels. > The service connections from the power company to the meter base and from > meter base to main breaker are AL. These are typically all lug connections. > > -----Original Message----- > From: John Woodgate [mailto:[email protected]] > Sent: Tuesday, December 13, 2016 4:45 PM > To: [email protected] > Subject: Re: [PSES] aluminum vs copper wiring > > Many people think it was a mistake to introduce it for low-current cables. > Big cables that use swaged connectors are another matter. > > With best wishes DESIGN IT IN! OOO - Own Opinions Only > www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England > > Sylvae in aeternum manent. > > > -----Original Message----- > From: Ralph McDiarmid [mailto:[email protected]] > Sent: Tuesday, December 13, 2016 9:38 PM > To: John Woodgate <[email protected]>; [email protected] > Subject: RE: [PSES] aluminum vs copper wiring > > I surprised it would have ever been 'code compliant' for building wiring. > Its properties must have been well understood long ago. > > Ralph McDiarmid > Product Compliance > Engineering > Solar Business > Schneider Electric > > > > -----Original Message----- > From: John Woodgate [mailto:[email protected]] > Sent: Monday, December 12, 2016 6:45 PM > To: Ralph McDiarmid <[email protected]>; > [email protected] > Subject: RE: [PSES] aluminum vs copper wiring > > Even 1.5 is a bit optimistic. Data in BS 7671 on voltage drop gives values > around 1.7 for the ratio, for the metals in the metallurgical conditions > actually used in cables. > > Aluminium wires tend to deform under contact pressure, thus relaxing the > pressure and raising the contact resistance. > > With best wishes DESIGN IT IN! OOO - Own Opinions Only > www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England > > Sylvae in aeternum manent. > > > -----Original Message----- > From: Ralph McDiarmid [mailto:[email protected]] > Sent: Monday, December 12, 2016 7:50 PM > To: [email protected] > Subject: Re: [PSES] aluminum vs copper wiring > > I've just come across this statement in a user manual for a small inverter > product: > > "Do not use aluminum. It has about 1/3 more resistance than copper cable > of the same size, and it is difficult to make good, low-resistance > connections to aluminum wire" > > I think both statements are wrong. Science Data Book by Oliver&Boyd, > lists resistivity of aluminum at about 1.5X that of copper. And, I don't > see why electrical connections would be less reliable using aluminum, > although, I do remember household wiring in the USA was done with Al some > years ago with questionable success. > > Thoughts? > > Ralph McDiarmid > Product Compliance > Engineering > Solar Business > Schneider Electric > > > > ________________________________ > This message was scanned by Exchange Online Protection Services. > ________________________________ > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to < > [email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher: <[email protected]> > David Heald: <[email protected]> > > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > ______________________________________________________________________ > ________________________________ > This message was scanned by Exchange Online Protection Services. > ________________________________ > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to < > [email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher: <[email protected]> > David Heald: <[email protected]> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to < > [email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in > well-used formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Scott Douglas <[email protected]> > Mike Cantwell <[email protected]> > > For policy questions, send mail to: > Jim Bacher: <[email protected]> > David Heald: <[email protected]> > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
