if a single dwelling unit personal home has a bathroom located inside of actual bedroom but seperated by a door header does this clasifie that this bathroom would be part of this bedroom and therfore be on the arc fault cir
I would say not, and in washington state we have a state rule on that. A bathroom is not a bedroom. There is a definition for bathroom in the NEC, it does not require AFCI.
But if its a cutler hammer panel you can get a afci/gfci combo device.
Because the fewer items you have on the trippy bugger, the less chance of nuisance tripping!
For the most part I don't have a problem and I routinely put the entire Master Suite on the AFCI, which includes bath fans and shower cans. Bath fans, despite all the warnings, haven't presented a nuisance trip yet.