NEMA 6-50 sockets only need two wires (plug to ground), because the neutral connection is not used in 6-50...Are they copper or aluminum? Many electrical wires that people might buy use fine-stranded wires.
As mentioned above, the process of moving from copper wire to fiber optic line has begun... the copper wire in the non-FTTP area will be closed, leaving people in trouble. ...Let's stay on the copper wire, while other places around me are using optical fiber, but...