What is the requirement for connecting metal raceways according to NEC®?

Metal raceways must be connected without interruption to ensure a continuous electrical path, which is essential for both electrical performance and safety. This requirement allows for effective grounding and minimizes the risk of electrical faults. By maintaining a continuous conductive path, it prevents potential breaks that could disrupt the flow of electricity or create hazards.

Using unbroken connections rather than introducing insulation, non-metallic fittings, or bonding jumpers for the entirety of the connection helps to avoid any impedance in the circuit that could lead to malfunctioning equipment or increased risk of shock or fire. This approach aligns with the objectives of the National Electrical Code (NEC®), which emphasizes safety and reliability in electrical installations.