B installation and use.
Gfci protected exhaust fan.
Bathroom ceiling exhaust fan requires a damper to prevent back drafts.
To provide gfci protection for an exhaust fan the incoming circuit power connects to the line side of the gfci outlet then the wires for the exhaust fan connect to the load side of the gfci outlet.
Bathroom exhaust exterior vent opening should be screened with a to mesh to prevent birds from building nests inside the vent pipe.
The switches for the exhaust fan and light are installed on the load side wiring as well.
A recessed light in a shower is not required to have gfci protection.
Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.
Gfci receptacles are required in bathrooms garages crawl spaces basements laundry rooms and areas where a water source is present.
110 3 examination identification installation and use of equipment.
The nec requires that all outlet receptacles in a bathroom be gfci protected.
Gfci protection is required for 125 volt to 250 volt receptacles supplied by single phase branch circuits rated 150 volts or less to the ground.
Some exhaust fans require the gfci protection.
An exhaust fan in the shower is a poor design in my opinion and must be installed per 110 3 b.