Thomas & Betts XJG54-TB XJG Expansion Couplings

The XJG54-TB is a 1-1/2 inch trade size expansion coupling with threaded ends, so it makes up to standard 1-1/2 inch rigid or IMC conduit threads. Outside diameter of the body is 3.36 inches, and overall length is 10.56 inches, so allow for that run length plus room for the fitting body when you cut your conduit.

No. The XJG54-TB has a true internal bonding jumper, so no external grounding strap is needed. The jumper is tamper-proof and sealed inside the fitting, away from the weather, which is why it works for exposed runs where an external strap would be a target for damage or vandalism.

Yes. The coupling carries UL file E23018 and CSA certification, which is what an inspector or a facility spec typically asks for on an expansion fitting in a grounded conduit system.

A standard coupling locks two lengths of conduit rigidly together. On long runs, temperature swings move the conduit, and that movement has to go somewhere, usually into the boxes and supports. The XJG expansion coupling lets the run move linearly and exceeds code requirements for that purpose, while keeping the ground path continuous through its internal jumper. Use it on long straight runs, at building expansion joints, and anywhere the conduit is exposed to a wide temperature range.

Order Thomas & Betts XJG54-TB. That is the manufacturer part number for the 1-1/2 inch trade size version of the XJG threaded expansion coupling, supplied one per box.

It is a one-piece fitting, not a two-piece design, and it has no inspection opening or cover. You thread it into the run as a single assembly, so plan the make-up before final tightening because there is no access door to get inside afterward.

It is a metal-bodied threaded expansion coupling, built for use in metallic conduit systems where the fitting itself is part of the equipment ground path (which is why the internal bonding jumper is there).