Topaz Lighting 621 Bronze Grou...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.68
Topaz Lighting 621 Bronze Ground Clamp for Armored Wire

Topaz Lighting 621 Bronze Ground Clamp for Armored Wire

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Model: 621

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2.68
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Topaz Lighting 621 Bronze Ground Clamp for Armored Wire

The Topaz Lighting 621 Bronze Ground Clamp for Armored Wire connects bare or armored copper wire to steel water pipes or copper ground rods, providing a dependable grounding path for residential, commercial, and industrial electrical systems. Machined from corrosion-resistant standard bronze for long service life, this UL Listed clamp is available across a full family of sizes from 1/2" through 6" to match the grounding electrode on your installation, and it accommodates #8 to #4 AWG bare or armored copper wire.

Key Features

  • Pipe Size Range: Fits steel water pipes and ground rods from 1/2" through 6", giving electricians and contractors the correct fit for residential, commercial, and industrial grounding electrodes.
  • Wire Range: Accommodates #8 to #4 AWG bare or armored copper wire, covering the most frequently specified grounding conductor sizes on the job.
  • Durable Bronze Construction: Manufactured from corrosion-resistant standard bronze for optimal longevity, mechanical strength, and reliable long-term electrical conductivity.
  • Integral Clamp Design: Features an integral clamp for a secure, low-resistance mechanical and electrical connection to the grounding electrode without additional hardware.
  • Copper Ground Rod Approved: Approved for use with copper ground rods in addition to steel water pipes, expanding application versatility on the electrode side of the grounding system.
  • Full Size Family: Offered by Topaz Lighting in 1/2", 1", 1-1/4", 2", 4", 5", and 6" sizes, so the correct clamp is available whatever electrode diameter the installation calls for.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Pack Size: 100

Typical Applications

  • Grounding Bare or Armored Copper Wire to Steel Water Pipes
  • Copper Ground Rod Electrode Connections Where Approved
  • Service Entrance and Panelboard Grounding Electrode Conductor Terminations
  • New Construction and Renovation Electrical Grounding Installations
  • Industrial and Commercial Conduit and Raceway Grounding Systems

Why Topaz Lighting?

Topaz Lighting's bronze ground clamps are built from corrosion-resistant standard bronze construction, delivering a durable, code-compliant grounding connection that stands up to the rigors of professional electrical work. With UL Listing and an integral clamp design, this ground clamp family gives electricians and contractors the mechanical security and electrical reliability they need across the full 1/2" to 6" size range, backed by Topaz Lighting's reputation for dependable electrical fittings.

Product Specs

Product Type:
Ground Clamp
Listing:
UL Listed
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Straps & Supports
Product Material:
Bronze
Pack size (unit):
100
Product Size:
1/2" - 6"

Topaz Lighting 621 – Frequently Asked Questions

1) What size pipe will the Topaz 621 bronze ground clamp fit?
The Topaz bronze ground clamp family covers steel water pipe and ground rods from 1/2 inch through 6 inches. Sizes offered are 1/2 inch (model 621), 1 inch (626A), 1-1/4 inch (626B), 2 inch (6-22), 4 inch (623B), 5 inch (624) and 6 inch (626D). Match the clamp to the outside diameter of the electrode you are bonding to, not to the conductor.
2) Can I use this clamp on a copper ground rod, or is it only for water pipe?
Both. The Topaz bronze ground clamp is approved for copper ground rods as well as steel water pipes, so the same part works on either electrode as long as the diameter falls in the 1/2 inch to 6 inch range.
3) Do I need extra hardware to install this ground clamp?
No. The bronze ground clamp uses an integral clamp design, so the mechanical and electrical connection to the electrode is made with the clamp itself. You supply the grounding conductor, #8 to #4 AWG bare or armored copper.
4) Why bronze instead of a zinc or steel ground clamp?
These clamps are machined from standard bronze, which resists corrosion at the point where the copper conductor meets the electrode. That matters on a water pipe bond in a damp basement or a driven rod in soil, where a dissimilar or lower grade metal connector degrades and the bond resistance climbs over time.
5) Are Topaz bronze ground clamps sold individually or by the box?
They come in a pack of 100, which suits an electrical contractor or distributor stocking a single common size rather than a one-off service call. If you are standardizing a jobsite on one electrode diameter, order that size by the pack.
How fast can I get the Topaz Lighting 621 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Topaz Lighting 621 come with a warranty?
Absolutely. The Topaz Lighting 621 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Topaz Lighting 621?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Topaz Lighting 621 from ZenSupply?
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