At 08:59 25/09/99 EDT, you wrote:
>In a message dated 9/24/99 4:56:26 PM, ral@LCFLTD.COM writes:
>
><< Normal use causes the aluminum to loosen at all connections due to thermal
>contractions and expansions at the joints. >>
>
>Aluminum is one of those materials that "cold flows".  If anyone ever tinned
>a stranded copper wire and put it under a screw terminal, they know about
>loose connections and cold flow.  It WILL get loose, no matter what the
>fixtures were designed for.
>
>

That is only one form of cold flow. The other from is when a wire is
strained hard over an edge, which can cause the insulation to be eaten
through.
Foergive my dislexix fingers, I have spent the weekend dinging a trench for
our new storm water drain (Some 90feet by 2 to 3feet deep (Got it and the
plumbing done, and filled in! wow!)

Dennis