The regular Home Depot buss extension bars are designed for both copper
and aluminum wires so I don't think that's a problem anyway, but I have
a couple of extra bars on hand so I'll put some short pieces of wire in
them and bury them in moist soil (one in mostly acidic potting soil and
the other in mostly alkaline Arizona desert soil) as a test. I'll
report back here every so often on the results.
On 2/10/2012 11:00 AM, EZ wrote:
> Copper to aluminum buss bar mismatch can be handled by using anit oxidant
> grease on the connection point. I thought that the dis-similar metal
> problem is only a problem with the introduction of moisture; so if it is
> greased and kept dry it's a moot issue. (Maybe someone can confirm this).
> I've used some automotive rubberized undercoating on outdoor and buried
> connections and it's worked well for totally sealing up these kind of
> connections. It's a thick sticky black tar like goop that you spray out a
> can. Good stuff!
> Also the copper buss bars, although available, are expensive! I priced one
> with 14 holes, 6.7" long, and it was $24.70. If you need enough for 60
> radials...well, you can do the math.
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