Can open conductors be attached to the same fittings used with service conductors?

Open conductors should not be attached to the same fittings used with service conductors because service conductors have specific requirements and standards for safety and functionality. Service conductors are typically used to deliver electricity from the utility's supply to a building, and they are designed to handle higher voltages and provide necessary protection against environmental factors.

Using fittings meant for service conductors with open conductors could pose safety hazards, such as exposure to electrical shocks or short-circuits. It might also lead to violations of the National Electrical Code (NEC) that governs the installation of electrical systems to ensure safety and efficiency. Each type of conductor is designed for its specific purpose, and mixing them can lead to improper wiring practices which could compromise the overall safety of the electrical system.

Hence, it is important to adhere to NEC guidelines regarding the separation of various types of conductors to maintain safety and code compliance.