Hi,
I noticed there are SOME aluminum wires in the new home, specifically the very thick rough-in cable (red, black, white and bare ground in the cable) from outside to the main service panel, and the thick 240V cable from the service panel to range outlet (same red, black, white and bare ground in the cable) appear to be aluminum. All other branch circuits are copper. Does this wiring comply with NEC code? Are they more likely to cause trouble than copper and what particular care must be taken?
Is it normal practice to put in these aluminum cables for entrance and range in new constructions nowadays?
Thanks.
Randy