Thomas & Betts LTZUS06B-B LFMC HLFR UL 1-1/2IN BLK 15M/50FT

It is 1-1/2 inch trade size liquid tight flexible metallic conduit, supplied as a 50 foot (15 m) coil in black. One coil covers 50 feet of run, so figure your total footage plus slack at each termination before ordering quantity.

The LTZUS06B-B is metallic: it uses a galvanized steel core under the liquid tight jacket, which is what distinguishes LFMC from nonmetallic LFNC. Steel core conduit gives you the mechanical strength and crush resistance nonmetallic whips do not. Grounding still depends on how it is terminated and on the equipment grounding conductor you pull, so do not treat the core as a substitute for the wire-type EGC your circuit design calls for.

Liquid tight flexible metallic conduit is built for exactly that kind of connection: a moisture-resistant jacket over a steel core, used for the flexible final feed to rooftop condensers, pumps, and vibrating motor loads where rigid conduit cannot absorb movement. The LTZUS06B-B is the 1-1/2 inch black version. Confirm the specific location and temperature listing on the jacket print against what your inspector wants for direct sunlight exposure.

Rigid or EMT for the bulk of the run, LFMC for the last few feet. Flexible metallic liquid tight like the 1-1/2 inch LTZUS06B-B exists to absorb vibration and allow equipment to be shifted or pulled for service without breaking the raceway. Running long distances in flex is more expensive per foot, harder to pull, and usually limited by code for length, so keep it to the whip. If there is no movement and no moisture, plain EMT is the cheaper answer.

Order it by manufacturer part number LTZUS06B-B from Thomas & Betts. There is one configuration: 1-1/2 inch trade size, black, 50 foot coil. No color or length options to specify, so quantity is the only decision.