Morris 91620 Flexible Braided Jumper Strap, 12", 400A

Product Overview

The Morris 91620 is a 12" flexible braided jumper strap designed to maintain ground-electrode continuity while bridging expansion gaps and absorbing vibration or misalignment between moving parts.

Constructed from extra-flexible tinned copper braid with tin-plated pure electrolytic copper mounting pads, the 91620 is rated 330A for indoor use and 400A for outdoor use.

Key Features

• Extra-flexible tinned copper braid flattened into a rectangular profile for improved flexibility
• Tin-plated pure electrolytic copper mounting pads with 1/4" pad holes for bolted connections
• Rated 330A indoors and 400A outdoors
• Cross section: 154,500 circular mils — sized for high-conductivity bonding and grounding

What this jumper strap does

The Morris 91620 provides a flexible, low-resistance electrical connection to preserve continuity of grounding or bonding systems where rigid conductors would be damaged by movement, thermal expansion, vibration, or settling.

• Bridges expansion joints and movement gaps
• Absorbs vibration and compensates for misalignment between bonded parts
• Maintains a durable conductive path for grounding and bonding

Typical applications

Use the 91620 where a flexible bond is required between equipment, structures, or foundations that may move relative to one another. It is intended for bonding across expansion joints, equipment interfaces, and substation foundations where a solid conductor could fatigue or break.

• Bonding across expansion joints
• Equipment grounding where movement or vibration is present
• Substation and grounding installations requiring flexible continuity

Mounting and connection details

Each end of the 91620 has a tin-plated mounting pad. Attach the strap by bolting the pads to the surfaces being bonded using the specified pad hole size.

• Pad hole size: 1/4" — use appropriately sized bolts and hardware
• Bolt each tin-plated end pad to the mating surface to ensure mechanical and electrical continuity

Key specifications

Reference these verified measurements and ratings when selecting the 91620 for your installation.

• Length: 12"
• Amp rating: 330A (indoor) / 400A (outdoor)
• Cross section: 154,500 circular mils
• Pad size: 1-1/2" x 9/16"
• Pad hole size: 1/4"
• Material: tinned copper braid with tin-plated pure electrolytic copper pads

Before You Order

Confirm the model number and quantity required before ordering. Verify that the 12" length, pad-hole size, and amp rating match the requirements of your bonding or grounding application.

• Confirm compatibility of 1/4" pad holes with your bolting hardware and mating surfaces
• Verify the 330A indoor / 400A outdoor amp rating meets your installation's electrical requirements

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Morris 91620 Flexible Braided Jumper Strap, 12", 400A. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.