Morris 91549 Irreversible Grounding Connector, 500 MCM Run / 500 MCM Tap

Product Overview

The Morris 91549 is an irreversible grounding connector made from pure electrolytic copper. It creates a permanent electrical bond between large conductors and grounding electrodes where an irreversible connection is required.

This connector accepts a run conductor in the 500 MCM–250 MCM range, a tap conductor in the 500 MCM–350 MCM range, and can accept a 3/4"–5/8" ground rod or #5 (5/8")–#6 (3/4") rebar. It is described as acceptable for direct burial in earth or concrete.

Key Features

• Pure electrolytic copper construction
• Irreversible (permanent) connection
• Accepts conductor-to-conductor, conductor-to-rod, and rebar-to-conductor connections
• Acceptable for direct burial in earth or concrete

What this connector does

The Morris 91549 forms a permanent electrical bond in grounding and bonding systems. It is designed for irreversible connections between a run conductor and a tap conductor or between a conductor and a grounding electrode.

• Used in grounding-electrode and bonding systems
• Makes conductor-to-conductor, conductor-to-rod, or rebar-to-conductor connections

Compatible conductor and electrode sizes

Use this connector when your conductors and electrodes fall within the specified ranges below.

• Run (main) conductor range: 500 MCM – 250 MCM
• Tap conductor range: 500 MCM – 350 MCM
• Ground rod diameter: 3/4" – 5/8"
• Rebar sizes accepted: #5 (5/8") – #6 (3/4")

Materials and burial suitability

The 91549 is made of pure electrolytic copper and is described as acceptable for direct burial in earth or concrete.

• Material: Pure electrolytic copper
• Described as acceptable for direct burial in earth or concrete

Installation and connection type

The connector provides an irreversible, permanent mechanical and electrical connection. Installers should follow the manufacturer's installation instructions for completing the irreversible connection.

• Connection: Irreversible (permanent)
• Install per manufacturer instructions

Before You Order

Confirm conductor and electrode sizes match the listed ranges before ordering.

• Verify run and tap conductor sizes fall in the listed ranges.
• Confirm ground rod diameter or rebar size before installation.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Morris 91549 Irreversible Grounding Connector, 500 MCM Run / 500 MCM Tap. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.