Thomas & Betts LTBUS11L-C LFMC CMP UL 4IN BLU 30M/100FT

LTBUS11L-C is 4 inch trade size liquid tight flexible metallic conduit, supplied as a 100 ft (30 m) coil. One coil is the order unit, so a run longer than 100 feet means multiple coils and a coupling at the joint.

The core of LTBUS11L-C is galvanized steel, so the conduit itself is metallic rather than a plastic raceway. At 4 inch trade size, LFMC is not recognized as an equipment grounding conductor, so pull a separate equipment grounding conductor sized to the circuit and land it at both ends. Use listed liquidtight connectors at each termination to keep the wet-location seal.

The LTBUS11L-C jacket is blue, which crews typically use as a color-coded identifier so a particular system (for example a dedicated circuit, controls, or a tenant feed) can be told apart at a glance from the standard gray liquidtight in the same tray or rack. Electrically and mechanically it is still a galvanized steel core liquid tight flexible metallic conduit; the color is for identification, not a different construction.

Yes, that is the normal use for it. Liquid tight flexible metallic conduit is a wet-location raceway with a sealing jacket over a galvanized steel core, and at 4 inch trade size it is generally used as the final flexible whip into large outdoor equipment such as chillers, RTUs, and big motor connections where vibration and movement have to be absorbed. Terminate both ends with liquidtight fittings rated for wet locations.

Use it only where you need flexibility. At 4 inch, liquidtight flex is heavy, expensive per foot, and hard to support compared with rigid or EMT, and code limits how far flexible conduit can run. For the straight portion of a feeder, run rigid or EMT and use the LTBUS11L-C coil for the short flexible transition into vibrating or movable equipment. A 100 ft (30 m) coil covers several of those whips rather than one long run.

Order Thomas & Betts part number LTBUS11L-C. That number covers the 4 inch blue-jacketed liquid tight flexible metallic conduit with a galvanized steel core in the 100 ft (30 m) coil. There is a single configuration under that number, so there is no size or color suffix to specify.