We recently got rid of our electric stove in favor of a gas stove, so now I have a 50 amp breaker in my box and about 30' of 8-3 cable that now feeds nothing. The breaker is at the top left of the box. Everything is relatively new-when we moved into our home in 2008 the house had a maxed out 100A service, so as a condition of the sale we had the previous owner upgrade to a 200A service, so the breaker, box, etc...was all replaced. The box is a SquareD and it appears that there is an interlock panel that will work with the box so that I can lock out the main breaker when the 50 amp breaker is closed, and vice versa. The question is, is there any reason that the five year old 50 amp former stove breaker cannot be used to feed generator power into the panel? I'm pretty sure that in this case a breaker is a breaker, but I just want to be sure before I go ahead and assume. The plan is to run the 8-3 cable out the side of the house to a 30 amp weatherproof male receptacle, install the lockout panel, and be able to power the essential circuits in the house with a 4200W generator. Obviously the cable and breaker can handle much more than 30 amps, but even if I upgrade my generator I won't need more than the 30 amp capacity of the receptacle. Does this sound workable?