Bonding cast aluminum

[eds]

I have some poured in place cast aluminum boxes that are going to be within the 5ft bonding space of a pool
(Low voltage step lights). Will it be okay to use a copper lug bolted to the aluminum with a stainless screw? Will the copper lug, the concrete, and the aluminum react to each other?

 

[ActionDave]

I'm not a pool guy expert or a science major but I am going to say, Yes, If you put all those different metals together in concrete there is going to be some bad corrosion that you don't want.

 

[FionaZuppa]

there are some options. search gool for "galvanic reaction chart"

i would coat the connection(s) (after fastening) with some anti corrossion goop before concrete is poured over it. even some duct tape over it blocking direct contact with the concrete would help make it last longer/lifetime.