<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Ohh, mostly the issue of different expansion/shrink coefficients of the 2 very different materials, promoting arcing and excessive heating up under load. Same problems arise too due to the galvanic reaction between the 2 metals with the Aluminium wire/winding corroding faster over time.</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">If one can limit air/moisture intrusion into the junction, issues will be extremely slow to show up, but that is not realistic.</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Years back in the late 60s to early 70s, Canadian builders used Aluminium wiring throughout the houses, I lived in one in Waterloo and it was pleasing(not!) to hear the barely-discernible arcing sounds coming from light switches, dimmers and a few AC outlets. </div><div class="gmail_default" style="font-family:tahoma,sans-serif">All the outlets/switches/dimmers are made with Copper leads. <br>Cue a teenager(me) doing a replacement of all of them Marette wire connectors without turning off the breakers(young and stupid..er). <br>I did not replace light fixtures connectors as I didn't feel comfortable doing that sort of thing standing on a rickety chair.</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">As I think back, if I was in that house on Highpoint Avenue today, I would not be able to sleep a wink.<br></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><br>Ron S.<br><br></div></div></div></div></div></div><br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Pardon my electrical ignorance here, but what's wrong with<br>
copper/aluminium mixing in this case?<br>
<br>
- Chris<br>
<br>
<br>
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