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ABB - Installation Products XJG78-EMT - 2-1/2 Inch XJG Conduit Expansion Coupling with Internal Bonding Jumper, 8 Inch Movement for Use with EMT Conduit

ABB Installation Products XJG78-EMT 2-1/2 Inch XJG Conduit Expansion Coupling with Internal Bonding Jumper, 8 Inch Movement…

UPC: 786209869265

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Installation InstructionsSpecification SheetManufacturer Product Website

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The ABB Installation Products XJG78-EMT is a 2-1/2 inch conduit expansion coupling engineered for use with EMT (Electrical Metallic Tubing) systems. This coupling provides up to 8 inches of axial movement to accommodate thermal expansion and contraction in long conduit runs, preventing stress on conduit and connected equipment. Its integrated internal bonding jumper—constructed of tinned copper braid—ensures continuous electrical conductivity across the expansion joint without requiring external grounding straps, meeting NEC® Article 250.98 bonding requirements. The fitting is constructed from malleable or ductile iron with exterior and interior zinc plating for corrosion resistance and is raintight after installation. Installation is simplified with no disassembly required; slide the coupling onto the conduit until it stops at the internal sliding bushing, then tighten the gland nut for a secure, tamper-resistant connection. The internal sliding bushing (keyed) maintains alignment while allowing linear movement. This coupling is ideal for industrial facilities, large commercial buildings, or outdoor installations where conduit systems experience significant temperature fluctuations. The 2-1/2 inch size accommodates standard EMT conduit installations requiring substantial axial displacement. SKU: XJG78-EMT.
  • 8 inches of axial movement for thermal expansion/contraction compensation
  • Internal bonding jumper (tinned copper braid) ensures continuous electrical continuity
  • No external grounding strap required; meets NEC® Article 250.98 bonding requirements
  • Constructed from zinc-plated malleable/ductile iron for corrosion resistance
  • Raintight design with no disassembly required for simplified installation

Specifications

Application
Fittings are Designed to Couple Pieces of Conduit Together that are Subject to Longitudinal Movement
Finish
Zinc Plate
Material
Steel
Material Quality
Ductile Iron
Series
XJG
Size
2-1/2 Inch
Size
2.5 Inch
Special Features
No Disassembly Necessary to Install. Fast, Simple, and Requires Fewer Steps
Standard
UL E23018, CSA
Type
EMT Conduit Fittings
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
32.3600 L
Package Weight (Metric)
14.6790 kg
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IT-4

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CPC75EG

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How to Install the XJG-EMT Expansion Joint

This guide provides step-by-step instructions for installing the XJG-EMT Expansion Joint with Electrical Metallic Tubing (EMT). The joint is designed to accommodate longitudinal movement in conduit runs and comes pre-assembled, requiring no disassembly.

Estimated time: 20m

Tools needed:

Pipe wrench

Supplies needed:

Electrical Metallic Tubing (EMT)

  1. Insert Electrical Metallic Tubing (EMT)

    Insert one section of Electrical Metallic Tubing (EMT) into each end of the pre-assembled XJG-EMT Expansion Joint. The gland nut comes partially tightened from the factory to facilitate easy insertion of the tubing.

  2. Tighten the Gland Nut

    Using a pipe wrench, tighten the gland nut at the end of the EMT connector. This action will compress the Teflon packing around the tubing, creating a rain-tight seal. Refer to the Torque Chart for correct torque values: 3/4" (21) & Smaller: 90.4 N•m (800 lbl-in); 1", 1-1/4", & 1-1/2" (27, 35 & 41): 113 N•m (1000 lbl-in); 2" (53) & Larger: 181 N•m (1600 lbl-in).

  3. Position the Internal Bushing

    Position the internal bushing in the middle of the expansion joint fitting. This ensures that the conduit can move equally in both directions, allowing for proper thermal expansion and contraction.

Frequently Asked Questions about ABB - Installation Products

How are Thomas and Betts products typically installed?

Thomas and Betts products are installed using a variety of methods tailored to specific applications, including the use of flexible cords and cable fittings, non-metallic cable glands, and armored cable fittings. Proper selection of fittings is crucial to match the cable type and installation environment, ensuring durability and preventing physical damage. Tools such as the Blackburn® Comfort Crimp® and HEX-FLEX® systems enhance installation efficiency and reliability, reducing labor time and ensuring secure connections.

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Thomas and Betts offers a comprehensive range of accessories for their products, including various cord and cable fittings, non-metallic cable glands, service entrance cable fittings, and armored cable fittings. Their accessories are designed to enhance installation efficiency and ensure compatibility with different cable types and environmental conditions, providing reliable connections for a wide array of applications.

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What are the main product lines offered by Ocal?

Ocal offers a comprehensive range of corrosion-resistant conduit systems, including PVC-coated conduit and fittings, conduit bodies, hazardous location fittings, and strut accessories. Their products are designed to provide superior corrosion protection, featuring a hot-dipped galvanizing process and UL listed Type 4X PVC-coated conduit bodies, ensuring durability in the most demanding environments.