Exhaust Fan Code Requirements for Bathroom
After talking to Manufacture company , Answering to my own questions
Question : Does a 50 CFM of Exhaust fan enough or does it has to be higher because I have full bathroom ?
Answer : No. its based on just size of a bathroom.
Question : Does this fan has to be GFCI protected even if it is not directly above tub, although its 1 feet away from edge ( not wall side) of tub ?
Answer : If a fan is inside area of Shower/Bathtub. then GFCI protected needed. Let say if its just 6 inch outside of curtain road or Shower glass, the manufacture company doesn't require it as GFCI protected.
So it depends upon what type of fan do you have in your bathroom. you want to first check with manufacture company if you have the similar case.