Thomas & Betts LTGUS11B-C LFMC GP UL 4IN BLK 30M/100FT

The core is galvanised steel, wrapped in a black liquid tight jacket. That steel core is what gives it crush resistance and a continuous metallic path, and the jacket is what keeps water, coolant and washdown spray off the conductors, which is why this style is used for outdoor whips, pump and motor connections, and wet or damp locations.

A coil of LTGUS11B-C is conduit only. Liquid tight connectors are ordered separately and have to match both the conduit trade size and the knockout size at the box or enclosure, and you need one at each termination. Order the sealing-ring style connectors if the enclosure rating depends on a watertight entry.

One coil of the LTGUS11B-C runs 100 feet (30 m). That is the packaged length, so if you are pulling a long outdoor run or feeding several rooftop units, count your total footage before you order a single coil.

That is exactly the job it is built for. Rigid or EMT handles the straight, fixed runs; the flexible metallic liquid tight takes the last few feet into equipment that vibrates or has to be pulled for service, and the black jacket keeps weather and oil out of the run. For dry interior flex where moisture is not a factor, plain flexible metal conduit is the cheaper choice, and for corrosive or heavy chemical exposure buyers usually step up to a non-metallic liquid tight instead.

Don't count on it. The LTGUS11B-C has a galvanised steel core, but liquid tight flexible metallic conduit is only permitted as a grounding path in limited sizes and lengths, so most installers pull a separate green equipment grounding conductor through the run and land it at both ends. Size the conduit to leave room for that extra conductor.

Order it as Thomas & Betts LTGUS11B-C. It is the black, galvanised steel liquid tight flexible metallic conduit supplied in a 100 foot (30 m) coil. Distributors matching a customer's existing stock should quote that full designation, since the suffix identifies the coil length and jacket colour.