So my electrician upgraded my home from 60 ampere to 100 ampere service. Inspector failed it because of the size of the wire outside. Said it should be #2 instead of the #3 that my sparky used. Inspector explained that although the power company uses #3 (alum.) wire for their drop, I have to use the larger #2 (copper) because it is in conduit (the mast).
Does this make any sense? I have the best electrician and he was surprised by this.