NSi Industries Heavy Duty Bron...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.11
NSi Industries Heavy Duty Bronze Ground Clamp for Water Pipe

NSi Industries Heavy Duty Bronze Ground Clamp for Water Pipe

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Model: G1

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

$5.11
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NSi Industries Heavy Duty Bronze Water Pipe Ground Clamp

The NSi Industries Heavy Duty Bronze Water Pipe Ground Clamp (G-13) is built to grip water pipes ranging from 4-1/2" to 6" in diameter, using a serrated cast bronze body for a secure, long-lasting connection. The clamp body is made from cast bronze while the tightening screws are zinc-plated steel, combining economical materials with durable, code-compliant performance. It is cULus Listed to UL 467 for Grounding and Bonding, making it a reliable choice for grounding wires to water pipes in commercial and residential electrical systems.

Key Features

  • Trade Size: Fits water pipes from 4-1/2" to 6" in diameter for heavy-duty grounding applications.
  • Durable Construction: Cast bronze clamp body paired with zinc-plated steel screws for reliable, long-term performance.
  • Serrated Body: The serrated bronze body bites into the pipe surface for a secure, low-resistance grounding connection.
  • Set Screw Connection: Includes a set screw for quickly and easily attaching ground wires to water pipes.
  • Interchangeable Design: Compatible with heavy-duty bronze adapters and hubs, allowing on-the-fly adjustment and greater installation flexibility.
  • Field Application: Designed for grounding applications, suitable for use alone or in combination with adapters.

Certifications & Compliance

  • cULus Listed to UL 467 for Grounding and Bonding

Technical Specifications

  • WARRANTY: 1 Year

Typical Applications

  • Electrical Grounding and Bonding Systems
  • Water Pipe Grounding Installations
  • Commercial and Residential Electrical Installations
  • Panelboard and Service Entrance Grounding
  • Renovation and New Construction Wiring

Why NSi Industries?

NSi Industries builds its G Series ground clamps from cast bronze with zinc-plated steel hardware, delivering durable, corrosion-resistant performance for demanding grounding and bonding applications. Backed by cULus Listing to UL 467 and a 1 Year warranty, this clamp's interchangeable adapter and hub design gives electricians the flexibility to adapt on the job. Stock products you can rely on—stock NSi.

Manufacturer Resources

Product Specs

Series:
G Series
Department:
Electrical
Country of Origin:
India
Product Type:
Ground Clamp
Sub-Division:
Electrical-E H2
Division:
Electrical H1
Product Material:
Bronze
WARRANTY:
1 Year
Field Application:
Ground
Connection Type:
Set Screw
Product Group:
Grounding & Bonding
Product Subgroup:
Grounding & Bonding

NSi G1 – Frequently Asked Questions

1) What pipe sizes do the NSi G Series bronze water pipe ground clamps fit?
Two sizes cover very different pipe. The G1 handles 1/2 inch to 1 inch pipe, and the G13 handles 4-1/2 inch to 6 inch pipe. Measure the outside diameter of the water pipe you are bonding to first, since there is a large gap between the two ranges and neither will close on pipe outside its stated span.
2) Is the NSi G13 ground clamp UL listed for grounding a water pipe electrode?
The G13 is cULus Listed to UL 467 for grounding and bonding, which is the listing an inspector looks for on a grounding electrode conductor connection to a metal water pipe.
3) What is the difference between the NSi G Series bronze ground clamp and the Appleton GH1 Series ground clamp?
The NSi G Series clamp uses a cast bronze body with zinc-plated steel screws and a set screw connection for attaching the ground wire, and it is cULus Listed to UL 467 for grounding and bonding. The Appleton GH1 Series is a malleable iron universal ground clamp with a hot-dip galvanized finish. So the choice is largely a material one: bronze against galvanized malleable iron. Bronze is the traditional choice for direct contact with copper water pipe, while a galvanized malleable iron body is the heavier-duty universal style.
4) What is the NSi G Series ground clamp made of, and will it corrode on a copper water line?
The clamp body is cast bronze with zinc-plated steel tightening screws. Bronze against copper pipe is the standard pairing for a water pipe bond because the two metals sit close together galvanically, so you avoid the corrosion you would get from a dissimilar-metal clamp.
5) How does the ground wire attach to the NSi bronze water pipe clamp?
By set screw. You land the grounding conductor under the screw and tighten, no crimp tool or lug needed. The clamp body itself is serrated so it bites into the pipe surface for a low-resistance connection when you draw it down.
6) Can I use the NSi bronze ground clamp on galvanized steel pipe or a ground rod instead of copper water pipe?
The G Series bronze clamps are built for water pipe in the stated diameter ranges, 1/2 to 1 inch on the G1 and 4-1/2 to 6 inch on the G13. If you are clamping a driven ground rod or want a single clamp that covers pipe and rod, look at a universal-type clamp such as the Appleton GH1 Series malleable iron ground clamp in hot-dip galvanized, which is the galvanized-iron alternative rather than bronze.
7) For a corrosive or outdoor service entrance, should I specify the NSi bronze ground clamp or the Appleton hot-dip galvanized one?
Both are corrosion-oriented builds but they get there differently. The NSi G Series body is cast bronze, a material that resists corrosion inherently and is dissimilar-metal friendly against copper water pipe, with zinc-plated steel tightening screws. The Appleton GH1 Series is malleable iron protected by a hot-dip galvanized coating, which relies on the zinc layer rather than the base metal. Where the coating may be scraped during installation on rough pipe, a solid bronze body keeps its corrosion behavior through the full thickness.
8) Is the Appleton GH1 a direct drop-in replacement for an NSi G13 water pipe ground clamp?
Not automatically. The NSi G13 is a fixed-range clamp cut for 4-1/2 inch to 6 inch water pipe with a serrated cast bronze body and a set screw for the ground conductor. The Appleton GH1 Series is a universal-style malleable iron clamp, a different body design, so before swapping confirm the GH1 model you pick covers your actual pipe outside diameter and accepts your conductor size. Where the pipe is copper and the installation is a water pipe bond, the bronze G13 is the like-for-like part.
9) Which ground clamp should I standardize on across a building with mixed pipe sizes?
If the bonding points are all small copper water lines or all large mains, the NSi G Series lets you stock two part numbers, the G1 for 1/2 inch to 1 inch and the G13 for 4-1/2 inch to 6 inch, both cast bronze and cULus Listed to UL 467. If the pipe sizes across the building are scattered, a universal clamp line such as the Appleton GH1 Series reduces the number of SKUs you carry because one universal body spans a wider range of pipe.
10) Can the NSi G Series clamp be adapted to a pipe size it does not cover on its own?
The design is interchangeable with heavy duty bronze adapters and hubs, so it can be used alone or in combination with an adapter to adjust on the job. That said, the simplest path is ordering the size that matches your pipe: G1 for 1/2 to 1 inch, G13 for 4-1/2 to 6 inch.
11) Where would a contractor typically use the NSi G13 heavy duty bronze ground clamp?
It is a grounding and bonding part, used to tie a grounding electrode conductor to a metal water pipe at a service entrance or panelboard, in both commercial and residential work and on retrofit as well as new construction. The 4-1/2 to 6 inch range suits the larger incoming mains you see in commercial buildings rather than a residential service line.
How fast can I get the NSi G1 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 NSi G1 come with a warranty?
Absolutely. The NSi G1 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 NSi G1?
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 NSi G1 from ZenSupply?
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