On Thursday, July 26, 2018 at 1:16:31 PM UTC-4, freenews wrote:
My experience with Al is that a copper pigtail is required !
Use a wire nut with Al to Cu goop to keep from oxidizing.
Cu then goes to the GFCI or switch etc.

Right. Use NoaLox, which is an anti-oxidant compound. Noalox stands for "No Aluminum Oxidation". It goes between copper and aluminum connections to SUPPOSEDLY stop fires.