I came across a bathroom inside of a secondary bedroom but a door separates the two, does the bathroom have to be arc fault protected? The bathroom is currently on it's own standard breaker and is not tied to the bedroom circuit, but it does tie to the master bathroom which has no door separating it from the master bedroom, just a big opening. The master bedroom is on it's own arc breaker. Am I correct in saying that the master bathroom should be arc fault protected because there is no door separating the bedroom from the bathroom which in turn protects the secondary barthroom anyways. If so...code reference. Thanks:-?