Answer:
B.with the approval of the assembly
Explanation:
In the National Electrical code ®, article 310 contains tables that are used to determine the proper size of a conductor.
Article 310 is to be used for general requirements for wiring, but not in areas where it's a part of an integral device like a motor, motor controller, or where covered in another a part of the NEC.
National Electrical Code, Article 310 covers general requirements for conductors rated up to and including 2000 volts and their type designations, insulations, markings, mechanical strengths, ampacity ratings, and uses.
It doesn't apply to conductors that are a part of flexible cords or fixture wires - nor does it apply to conductors that are integral parts of apparatus/equipment.
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