TYPE XJG-EMT EXPANSION JOINT
Installation Instructions
APPLICATION
XJG-EMT Expansion Joints are used with Electrical Metallic Tubing, to couple together (2) two sections of tubing
subject to longitudinal movement.
XJG-EMT Expansion Joints are installed:
• Without the need for unit disassembly.
• Internally grounded therefore it does not require an external bonding jumper when used indoors or outdoors.
• On long conduit runs to permit linear movement caused by thermal expansion and contraction.
• On long conduit runs to prevent buckling and ensuing failures.
XJG-EMT Expansion Joints are UL Listed (UL Std. 514B) and CSA Certified (CSA Standard C22.2 No.18) as an
effective grounding means (i.e., the path to ground is permanent and continuous), for the telescopic sections of the
tubing. A metallic packing ring ensures the entire conduit system remains a continuous electrical conductor. The
internal grounding method uses a flexible bonding jumper that is bolted on a movable bushing. The other end is
mounted to a fixed end stop that is clamped on the body and secured in place by the gland nut. These joints are
weatherproof and approved for use indoors and outdoors without an external bonding jumper. XJG-EMT Expansion
Joints meet the requirements of Article 250.98 of the National Electrical Code, providing an electrically continuous
raceway, requiring no additional bonding means.
XJG-EMT Expansion Joints permit the conduit to move either 2 inches or 4 inches from center of fitting, in either
direction. This results in a total movement of either 4 inches or 8 inches.
Example:
XJG24-EMT = 4" movement
XJG28-EMT = 8" movement
END STOP
XJG-EMT EXPANSION JOINT
CUT-AWAY VIEW
BONDING JUMPER
GLAND NUT
EXPANSION JOINT FITTING
INTERNAL BUSHING
STATIONARY HUB
FIGURE 1
WARRANTY: Thomas & Betts sells this product with the understanding that the user will perform all necessary tests to determine the suitability of this product for
the user's intended application. Thomas & Betts warrants that this product will be free from defects in materials or workmanship for a period of two (2) years
following the date of purchase. Upon prompt notication of any warranted defect, Thomas & Betts will, at its option, repair or replace the defective product.
Misuse, misapplication or modication of Thomas & Betts Products immediately voids all warranties.
Limitations and Exclusions: THE ABOVE WARRANTY IS THE SOLE WARRANTY CONCERNING THIS PRODUCT, AND IS IN LIEU OF ALL OTHER
WARRANTIES EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, WHICH ARE SPECIFICALLY DISCLAIMED. LIABILITY FOR BREACH OF THE ABOVE WARRANTY IS LIMITED TO COST OF
REPAIR OR REPLACEMENT OF THE PRODUCT, AND UNDER NO CIRCUMSTANCES WILL THOMAS & BETTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
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THE XJG-EMT EXPANSION JOINTS ARE DELIVERED PRE-ASSEMBLED.
INSTALLATION INSTRUCTIONS
1) No disassembly required. The gland nut comes from the factory partially tightened to allow easy insertion of
tubing. Figure 2 shows how the XJG-EMT Expansion Joint is packaged and received.
Gland Nut
NOTE: EMT is inserted onto each end of the XJG-EMT shown in Figure 3.
FIGURE 2
EMTEMT
FIGURE 3
2) Tighten gland nut using a pipe wrench, as shown in Figure 4. This will compress the Teon packing around the
tubing, providing a rain tight seal (See Torque Chart for correct torque). Tighten the gland nut at the end of the
EMT connector.
Coupling
EMT
Gland Nut
Expansion Joint
EMT Connectors
EMT
Trade Size
3/4” (21) & Smaller 90.4 N•m (800 lbl-in)
1”, 1-1/4”, & 1-1/2”
(27, 35 & 41)
2” (53) & Larger 181 N
TORQUE CHART
Torques
•
113 N
•
m (1000 lbl-in)
m (1600 lbl-in)
FIGURE 4
3) Allow for movement in either direction by positioning the internal bushing in the middle of the expansion joint
tting (XJG-EMT), as shown in Figure 5.
Internal Bushing
Allow for equal
movement in both
directions
FIGURE 5
© 2016 Thomas & Betts Corporation. All Rights Reserved.
Expansion Joint Fitting
Thomas & Betts Corporation
Memphis, Tennessee
Website: www.tnb.com
TA05028 A Page 2 of 2
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