I plan to install a 100amp breaker into my existing FPE (200 amp service) box to service a new breaker box (also 200 amp service), then rewire the house to the new box, and because of other reasons we will be moving the incoming service to the new box. Note: I say "we" but in this case "we" means electricians and the electric company as far as they need to be involved.
Anyway, if anyone is familiar with the FPE Stab-Lok load center, I'd appreciate some advice about the 100amp breaker. I've found the NA2100 (Type NA, 2 poles, 100 amp) breakers, but I'm not sure if this is the one I need for this breaker box or not. My existing breakers are type NC. Apparently the type NB breakers bolt in ("B" is for "Bolt" obviously). I have found several of the 30amp or less breakers as type NC, but anything over that seem to be type NA. I just want to know if the NA2100 will work in my box...or if you need more information to make that determination.