Class 2 circuits may be installed in the same enclosure or cable with conductors of Class 3 circuits provided _________.
A. Circuit voltages are not above 150V
B. They are functionally associated
C. The class 2 conductors are insulated to a minimum of 300V
D. The class 2 and Class 3 conductors are insulated to a minimum of 600V
C. The class 2 conductors are insulated to a minimum of 300V
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