Chapter 2

Question 1

Article 2.0 - USE AND IDENTIFICATION OF GROUNDED CONDUCTORS
Grounded conductors shall comply with 2.0.1.2(A)
(A)Insulation.
The grounded conductor, if insulated, shall have insulation that is : State condition (1) and (2)

Answer 1

1. Suitable other than color for any ungrounded conductor of the same circuit of systems 1000 volts or less, or for impedance grounded neutral systems of over 1000 volts
2. rated not less than 600 volts for solidly grounded neutral systems of over 1000 volts