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Manufacturer Resources
Product Specs
- Number Of Batteries:
- 0
- Product Type:
- Expansion Coupling
- Department:
- Electrical
- Product Material:
- Ductile Iron
- Product Group:
- Conduit & Raceway
- Product Subgroup:
- Conduit Fittings
Thomas & Betts XJG94-EMT – Frequently Asked Questions
1) How much movement does the XJG94-EMT expansion fitting allow?
Four inches of travel. That is the total movement the coupling absorbs across the joint, which is what you size against the calculated thermal expansion and contraction of the EMT run, or against the rated movement of a structural or seismic joint the conduit crosses.
2) Do I need an expansion coupling where conduit crosses a building expansion joint?
Yes, and that is exactly what the XJG94-EMT is for. A rigid coupling at an expansion joint transfers building movement straight into the raceway and the boxes at each end. This fitting takes 4 inches of travel in a 3-1/2 inch EMT run, letting the conduit move with the structure instead of pulling apart or buckling. It is also used on long exterior or unconditioned runs where temperature swing moves the conduit.
3) Does an EMT expansion coupling maintain the ground path, or do I need a bonding jumper?
An expansion fitting like the XJG94-EMT has a sliding joint, so the electrical continuity across it should not be relied on as the equipment grounding path. Standard practice on expansion fittings is an external bonding jumper across the fitting, or an equipment grounding conductor pulled in the raceway. Plan the jumper into the material list when you order.
4) Can I use this expansion coupling on rigid conduit or IMC instead of EMT?
No. The XJG94-EMT is an EMT fitting, terminating EMT on the coupling end rather than threaded rigid or IMC. For threaded rigid metal conduit or IMC you need the threaded expansion fitting version, not this one.
5) How do I set the travel on a 4 inch expansion coupling at install?
Set it by the ambient temperature at the time of install, not centered by default. On a 4 inch travel fitting, a run installed on a cold day should sit with most of the travel left for contraction closing toward the piston being extended, and a hot-day install the reverse. Splitting the difference on a mild day is the usual approach. Getting this wrong is the common reason an expansion coupling bottoms out a season later.
6) What part number do I quote for a 3-1/2 inch EMT expansion fitting from Thomas & Betts?
XJG94-EMT is the Thomas & Betts catalog number for the 3-1/2 inch EMT expansion coupling with 4 inch travel, in ductile iron. That is the number to put on the purchase order or submittal.
How fast can I get the Thomas & Betts XJG94-EMT delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Thomas & Betts XJG94-EMT come with a warranty?
Absolutely. The Thomas & Betts XJG94-EMT is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Thomas & Betts XJG94-EMT?
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