Thomas & Betts LTGUS03B-C LFMC GP UL 3/4IN BLK 30M/100FT

The core is galvanised steel spiral with a black liquid tight jacket over it, so it's metallic flexible conduit, not plastic. Because the jacket covers the steel, the usual practice is to run a separate equipment grounding conductor inside rather than rely on the flex itself. Check the fitting listing and your local code for whether the assembly counts as a ground path in your application.

That's exactly what liquid tight flexible metallic conduit is for: short flexible connections to motors, compressors, condensing units and pumps where the run has to shed water and absorb vibration. The 3/4 inch size is the common choice for condensing unit and rooftop package unit whips. The black jacket is the standard general purpose grade, not a sunlight-specific or high-temperature specialty jacket, so confirm the temperature range needed if the equipment runs hot.

Both keep water out. The metallic version, like the 3/4 inch LTGUS03B-C, has a galvanised steel spiral core under the jacket, which gives it crush and abrasion resistance and physical protection where the whip is exposed to foot traffic, service work or equipment contact. Nonmetallic liquid tight is lighter and easier to bend tight but offers no steel armor. For outdoor mechanical equipment and anywhere the flex can be kicked or stepped on, the metallic type is the usual specification.

The manufacturer part number is LTGUS03B-C from Thomas & Betts, a 3/4 inch black general purpose liquid tight flexible metallic conduit in a 100 foot (30 m) coil. That's the number to quote or cross-reference; the 03 in the designation corresponds to the 3/4 inch trade size.

Fill is set by code conduit fill tables for the conduit type and trade size, not by the coil itself. For a typical equipment whip in 3/4 inch, three or four 10 or 12 AWG THHN conductors plus a ground is a routine pull and well inside the 40 percent fill allowance. If you're running larger than 8 AWG or more than four conductors, calculate fill before committing to 3/4 inch and step up if needed.

Yes. The LTGUS03B-C ships as a 100 foot (30 m) coil in a single 3/4 inch black size, which is what makes it easy to standardize: one part number, one fitting size to stock, and enough length to cut multiple equipment whips off one coil. Facilities and MRO buyers typically pair it with a matched box of 3/4 inch liquid tight connectors so any tech can make up a whip without hunting for parts.