I have put off installing a transfer switch because the cable will need to be run the length of the house (all those joists to drill through) and the expense. Well, I found a half price 5000w switch at HD and a half price right angle drill at Ebay, so I am going to do it; but what cable size.
I have a 13a genny that satisfies all my needs. It would only require 14/2. But as long as I am doing it, I might as well install a 12/3, as the next owner might be more demanding. The cable won't be that much more, or be that much harder to use. However, the 12/3 is only good to 4800w, and the switch is 5000w. Would those lousy 200w make any real difference? Obviously they would need a 5000w genny, and even then it would only be above 4800w for very short and rare instances. I really don't want to use 10/3. It is expensive and hard to work with, and will require a significantly larger hole in the joists. Does code get involved here? Can I simply say that it is only for use with 4000w and smaller generators? I have no intention of ever going above 1600w, and expect to live here for the next 10 years at least. Thanks.