Ground-fault circuit-interrupter protection for personnel shall be provided for cables installed in electrically heated floors of bathrooms and kitchens and in hydromassage bathtub locations. This protection shall be _______.
A) Class A ground-fault protection
B) Class C ground-fault protection
C) Class D ground-fault protection
D) not required
See the answer below.
Answer: A
Article 424 focuses on fixed electric space-heating equipment. As specifically outlined in Sec. 424.44(E), “Ground-fault circuit-interrupter protection for personnel shall be provided for cables installed in electrically heated floors of bathrooms and kitchens and in hydromassage bathtub locations.
As per UL 943, Class A ground-fault protection is 4mA to 6mA (5mA nominal). Class C and Class D ground-fault protection is 20mA.
Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at [email protected].
