Insulated Grounding Bushing, 4", Zinc Die Cast with Lug

Insulated Grounding Bushing, 4" Zinc Die Cast with Lug - Electrical Conduit Fitting The Bridgeport Insulated Grounding Bushing 390-DC is designed for terminating service conduit to cabinets using a locknut, providing protection for conductors inside threaded rigid or IMC conduit. This grounding bushing includes a tin-plated aluminum alloy lug for bonding a jumper to the neutral busbar, making it suitable for electrical distributors and switchgear suppliers requiring reliable grounding solutions. The plastic metaliner safeguards wire insulation from damage, while the zinc die cast construction ensures durability. Rated for operation up to 150°C, this product supports applications in lighting solutions, wire and cable installations, and general electrical construction. Specifications Material: Zinc Die Cast Finish: Ball burnish Color: Grey with Black Insulator Length: 4.8125 in Width: 3.875 in Temperature Rating: 150°C Grounding Lug Wire Capacity: 14 to 1/0 AWG Manufacturer: Bridgeport Fittings Manufacturer Part #: 390-DC Product Weight: 0.5570 lbs Country of Origin: China Features Used with locknut to securely terminate service conduit or fittings to cabinets Plastic metaliner prevents damage to wire insulation inside conduit Tin plated aluminum alloy lug for bonding jumper to neutral busbar Compatible with threaded rigid or IMC conduit systems Ball burnished finish for corrosion resistance and durability Meets OSHA-recognized and NRTL-listed electrical standards (File No. E20412) Downloads & Links Spec Sheet