Morris 91760 U-Bolt Ground Clamp, 2-Conductor, 2-1/2" Pipe, 250 MCM - #4 AWG

Product Overview

The Morris 91760 is a UL467-listed copper U-bolt ground clamp designed to connect two grounding conductors to a 2-1/2" pipe or similar electrode.

Cast from a high-strength, high-conductivity copper alloy and fitted with stainless steel bolts, nuts, and lock washers; rated for direct burial in soil or concrete.

Key Features

• Connects two conductors parallel or at 90° to the pipe or electrode
• Wire capacity: 250 MCM down to #4 AWG
• Fits 2-1/2" pipe, copper tubing, ground rods, rebar, or fencing
• Cast copper-alloy body for conductivity and strength
• Stainless steel bolts, nuts, and lock washers resist corrosion
• UL467 listed for direct burial applications

What this clamp does

The Morris 91760 provides a mechanical and electrical connection for two grounding conductors to a 2-1/2" pipe or other grounding electrode. It accepts two conductors installed either side-by-side (parallel) or oriented at 90 degrees to the electrode.

• Used to bond grounding conductors in grounding-electrode systems.
• Accepts conductors arranged parallel to each other or at right angles to the electrode.

Compatible electrodes and conductor sizes

This U-bolt clamp fits 2-1/2" pipe and is suitable for bonding to copper tubing, ground rods, rebar, or fencing where a U-bolt style clamp is appropriate.

• Pipe size: 2-1/2"
• Wire range: 250 MCM down to #4 AWG
• Connects two conductors (two-conductor capacity)

Materials, hardware, and listing

The clamp body is cast from a high-strength, high-conductivity copper alloy. Fastening hardware—bolts, nuts, and lock washers—is stainless steel. The assembly is UL467 listed for direct burial in soil or concrete.

• Body: copper alloy (cast)
• Hardware: stainless steel bolts, nuts, and lock washers
• Listing: UL467 (Direct Burial)

Basic installation procedure

Install the U-bolt around the electrode, position the two conductors in the clamp saddle, and tighten the nuts to secure the conductors. Use appropriate torque and field practices for grounding connections as required by local electrical code and job specifications.

• Seat both conductors in the clamp saddle before tightening.
• Tighten nuts to ensure firm mechanical and electrical contact.

Before You Order

Confirm the model number and quantity required before ordering. Verify that a 2-1/2" U-bolt clamp and the stated wire range (250 MCM to #4 AWG) meet your project and code requirements.

• Confirm electrode type (pipe, tubing, rod, rebar, or fencing) and clearance for a 2-1/2" U-bolt.
• Ensure conductor sizes fall within the listed wire range.
• Follow local electrical code and installation practices for grounding connections.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Morris 91760 U-Bolt Ground Clamp, 2-Conductor, 2-1/2" Pipe, 250 MCM - #4 AWG. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.