Conductor(s) other than service conductors shall not be installed in the same _____ in which the service conductors are installed.

• A. enclosure
• B. space
• C. conduit
• D. enclosure and service cable

Answer: (D)

Service conductors need their own dedicated space. Conductors that are not service conductors should not be installed in the same enclosure or in the same service cable that contains the service conductors. Keeping the service conductors separated helps prevent heat buildup and crowding, preserves proper insulation and accessibility for the service disconnect, and avoids interference with the service equipment. So the requirement applies to both the enclosure and the service cable, not just one of them.