Connect the large flexible wire to the distribution box

Secure flexible conduit to a distribution box using the correct connector, locknut, and bushing to ensure mechanical protection and proper grounding.Step 1: Select the Appropriate Conduit and ConnectorFlexible Metallic Conduit (FMC): Spiral-wound metal used indoors; requires a squeeze-type connector that clamps onto the conduit ribs .Liquid-Tight Flexible Metallic Conduit (LFMC): Metal core with a waterproof PVC jacket for wet or outdoor locations; requires a compression-style connector to seal against moisture .Non-Metallic Flexible Conduit (NMFC): Plastic-based conduit for dry residential areas; connectors may vary and often require separate grounding .Step 2: Prepare the ConduitMeasure the routing path and cut the conduit to length, adding 2–3 inches of slack for bends or movement .Strip the outer jacket or metal spirals if necessary to fit the connector, ensuring a clean, smooth end.Step 3: Install the ConnectorInsert the conduit into the connector. For squeeze-type connectors, tighten the screws to clamp the conduit securely .For compression-style connectors, tighten the nut to compress the gasket against the conduit jacket, creating a moisture-tight seal .Step 4: Attach to the Distribution BoxRemove the appropriate knockout from the box.Insert the connector through the knockout and secure it from inside the box using a threaded locknut .Ensure the locknut cuts into the metal of the box to establish a low-resistance electrical bond.Step 5: Install an Insulating BushingSlide a bushing onto the connector inside the box to protect wire insulation from sharp edges .This step is critical for preventing chafing and maintaining long-term safety.Step 6: Pull the WiresFeed the flexible wire through the conduit into the box carefully, avoiding kinks or sharp bends.Connect the wires to the appropriate terminals in the distribution box according to electrical codes.Tools and Materials NeededConduit cutter or utility knifeScrewdrivers (insulated handles)Drill with hole saws (if needed)Tape measureSqueeze or compression connectorsLocknuts and insulating bushingsFlexible conduit (FMC, LFMC, or NMFC) Safety and ComplianceAlways select connectors listed for the specific conduit type to comply with NEC Section 110.3(B) .Ensure a continuous grounding path by using metal boxes and properly tightened connectors.Avoid using rigid or EMT fittings on flexible conduit, as this can compromise mechanical integrity and safety . Following these steps ensures a secure, code-compliant, and durable connection between flexible wire and a distribution box, protecting both the wiring and the electrical system from mechanical and environmental hazards.