Morris 91520 Irreversible Grounding Connector, 500 MCM - 250 MCM to 5/8" Rod

Product Overview

The Morris 91520 is a permanent (irreversible) grounding connector designed to bond a 500 MCM–250 MCM grounding electrode conductor to a 5/8" ground rod or rebar.

Constructed from pure electrolytic copper, the connector is suitable for Copperweld or copper-clad cable and is acceptable for direct burial in earth or concrete.

Key Features

• Irreversible (permanent) mechanical connection
• Wire range: 500 MCM to 250 MCM
• Fits 5/8" ground rod or rebar
• Made from pure electrolytic copper
• Suitable for Copperweld and copper-clad conductors
• Acceptable for direct burial in earth and concrete

Function

The Morris 91520 provides a permanent mechanical bond between a large-diameter grounding electrode conductor and a ground rod or rebar. It is used to connect a 500 MCM–250 MCM conductor to a 5/8" rod as part of grounding-electrode systems, counterpoise wiring, or grid connections.

Materials and Environmental Suitability

This connector is formed from pure electrolytic copper. The material choice is intended to match or exceed the conductor's current-carrying capacity and to provide long-term conductivity.

• Acceptable for direct burial in earth and concrete
• Compatible with Copperweld and copper-clad cable

Installation and Connection Type

The 91520 is an irreversible (permanent) connector. Installation requires positioning the connector over a 5/8" ground rod with the conductor seated in the connector body and making the permanent mechanical compression per Morris's installation method.

• Irreversible connection—intended as a permanent joint
• Position over 5/8" rod with conductor seated before completing the connection

Specifications

Use the specifications below to confirm suitability for your grounding design and conductor sizes.

• Wire range: 500 MCM – 250 MCM
• Rod/Rebar diameter: 5/8"
• Material: Pure electrolytic copper
• Connection: Irreversible (permanent)
• Burial: Acceptable for direct burial in earth or concrete
• Compatible conductors: Copperweld, copper-clad, and standard copper

Before You Order

Confirm the model number and conductor size required before ordering. This connector is a permanent, irreversible device intended for a 500–250 MCM conductor on a 5/8" ground rod or rebar.

• Verify conductor material (Copper, Copperweld, or copper-clad) and size compatibility.
• Ensure a 5/8" rod or rebar is being used where the connector will be installed.
• Refer to Morris installation instructions for the correct method and tooling to make the irreversible connection.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Morris 91520 Irreversible Grounding Connector, 500 MCM - 250 MCM to 5/8" Rod. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.