On Apr 26, 1:51*am, Bruce L. Bergman

* B) *It's newer technology, driven by price to the end user - you
can't let the competition sell their breaker panel for a buck less,
they'll take all your sales. *The 'builder model' panels have tin-
plated aluminum busses to save a buck over using copper busses, and
for the average use in a nice dry location they work just fine for 30
to 50 years - that is, till the tin plating wears through from breaker
changes or is otherwise broken, thin plating on an edge with a burr
can do it.


* * -- Bruce --

When did the change to aluminum buss bars occur? I was not aware they
had done that. Will have to check the panels here.

Dan