Cant find any info on this. Sometimes have to replace an old 100 amp fuse box in rental property. Can we use a new 200 amp panel box, but replace the 200 amp main breaker with a 100 amp breaker? ( murray seems to be the only brand where the 100 amp breaker will fit in the same space as the original 200 amp breaker) This would save work if we need to upgrade to 200 amp service in the future. If small home with gas heat 100 amp seems to be fine. Main concern is fire and safety. Appreciate any and all suggestions. Thanks