Harold...
There's quite a price spread between copper lugs and aluminum lugs.
Right off the top of my head, I wouldn't trust ANY aluminum alloy as a viable conductor whenever Chlorine is present.
Hydrochloric acid reall goes to town on aluminum...
But, at a slower pace, so does hypochloric acid... table salt, road salt, and ground salt...
(Bleach is the sodium salt of hypochloric acid: sodium hypochlorite.)
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And, I can't think of the last time I saw copper bussing or copper lugs with a listed hot tub assembly.
It can't represent even 0.01% of the cost of the unit to go with copper.
What gives?
