Thomas & Betts LTBUS08L-G LFMC CMP UL 2-1/2IN BLU 80M/275FT

LTBUS08L-G is 2-1/2 inch trade size liquid tight flexible metallic conduit, supplied as a 275 foot (80 m) continuous run. At that trade size it is a feeder or service-sized whip, so plan the pull length against the reel footage before you cut: 275 feet is what you get per put-up.

It is metallic. The LTBUS08L-G is built on a galvanized steel core with a jacket over it, which is what separates LFMC from liquid tight flexible non-metallic (LFNC) tubing. The steel core gives you crush resistance and, when terminated with listed metallic liquid tight fittings, a metal raceway path; LFNC has no metal core and cannot do that.

That is the normal use for it. Liquid tight flexible metallic conduit is the whip you run to equipment that vibrates or has to be disconnected, and the sealed jacket over the steel core is what handles wet locations and washdown. At 2-1/2 inch trade size this is sized for large motor feeders, chillers and rooftop units rather than small control drops. Terminate it with liquid tight fittings rated for the same conditions.

The part number is LTBUS08L-G from Thomas and Betts: 2-1/2 inch LFMC, blue jacket, 275 foot (80 m) put-up. Order by that number if you are matching an existing run, since trade size and jacket color both change the suffix on this family.

The jacket on LTBUS08L-G is blue. Color on LFMC is a field-identification tool, not a performance difference: shops use a non-standard jacket color to flag a particular system so an electrician can tell it apart from the gray runs at a glance. If your spec or facility standard calls for a specific jacket color, blue is what this one ships as.