Use the Bridgeport 388 3-Inch Malleable Iron Insulated Grounding Bushing to terminate service conduit to a cabinet with a locknut. The bushing features a plastic metaliner that prevents damage to wire insulation and a 14 to 1/0 lug for lug for bonding a jumper to a neutral busbar. Temperature rated to 150 degrees Celsius this bushing is 1-inch long with diameters of 2-7/8 inches and 3-3/4 inches, and is solidly built to meet construction and general industry OSHA-recognized, NRTL-listed electrical standards