Thomas & Betts LTBUS09Y-A LFMC SPLP UL 3IN YLW 8M/25FT

The LTBUS09Y-A is 3 inch trade size liquid tight flexible metallic conduit, supplied as a 25 foot (8 m) coil. At 3 inch it is a feeder or service sized run, typically used for the flexible section between a raceway and a large motor, transformer, rooftop unit, or panel connection. One coil covers a 25 foot run, so order coils to suit the total footage plus slack for the bend loop.

The LTBUS09Y-A is built on a galvanized steel core with a liquidtight jacket over it, so it is metallic conduit rather than a nonmetallic liquidtight. Whether the metal core may serve as the equipment grounding conductor depends on the trade size, circuit rating, and length in your installation, so at 3 inch most installers pull a separate equipment grounding conductor and rely on the flexible conduit for physical and liquid protection.

Liquidtight flexible metallic conduit like the LTBUS09Y-A is built for exactly that: the jacket keeps water and oil off the steel core, which is why it is the normal choice for rooftop HVAC whips, pump and motor terminations, and outdoor equipment connections where a rigid raceway cannot absorb vibration or movement.

Yellow is the jacket color on the LTBUS09Y-A. Contractors use a colored jacket to identify a circuit or system at a glance, so crews can tell one run from another on a crowded equipment pad or in a mechanical room. It is the same construction as the standard product, just a yellow jacket over the metal core.

Each LTBUS09Y-A order is one 25 foot (8 m) coil of 3 inch conduit. Count the straight distance, then add for the sweep radius at each end and the service loop, since 3 inch liquidtight needs a generous bend radius and runs longer than the tape measure suggests. Jobs over 25 feet take multiple coils, and each additional length needs a coupling or a junction point.