So the old is 40 amp ga wire is 8-2/8-1 about 30' panel to plug. IIRC, at that run length 8 ga wire for 30A is cool. But I forget if I am OK just swapping the 40a for 30a breaker [220 2-pole of course]. Which what I think I remember. And the deliverer just moved the pig tail wire over which is 2-6/1-8 ga. Thinking putting 8-2/8-1 pigtail from plug to dryer along with the 30/220 breaker.