On Oct 26, 10:02*pm, Bob AZ wrote:

Aluminum wire has a bad habit of failing when buried and in contact
with anything but aluminum. The power company used to use it here but
they are well equipped to deal with it. You and I are not.

Aluminum wire has a bad habit of failing quickly when installed by
lazy idiots. When installed by competent tradesmen it works fine for
decades. Run in PVC conduit, buried in sand and with cement strips
planked on top to protect it it will work well. Do understand how to
deal with freezing and condensation in the conduit.