Appleton GH1 Series Malleable ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.66
Appleton GH1 Series Malleable Iron Universal Ground Clamp, Hot-Dip Galvanized

Appleton GH1 Series Malleable Iron Universal Ground Clamp, Hot-Dip Galvanized

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Model: GH-100G

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

$52.66
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Appleton GH1 Series Malleable Iron Universal Ground Clamp, Hot-Dip Galvanized

The Appleton GH1 Series Universal Ground Clamp is a malleable iron grounding clamp finished with a hot-dip galvanized, zinc-electroplated coating for long-term corrosion resistance in demanding electrical environments. Built with a secure screw-type connection, this universal clamp accepts a wide conductor range and is engineered for dependable, code-compliant grounding connections on conduit, pipe, rod, and grounding electrode systems. As part of the GH1 Series, it delivers the rugged, field-proven construction electricians expect from Appleton grounding hardware, making it a practical choice for contractors who need a grounding clamp they can specify with confidence across a range of job types.

Key Features

  • Durable Construction: Malleable iron body provides strength, impact resistance, and long service life in commercial and industrial grounding applications.
  • Corrosion-Resistant Finish: Hot-dip galvanized, zinc-electroplated coating protects against rust and corrosion in both indoor and outdoor installations.
  • Secure Screw Connection: Screw-type clamping mechanism ensures a tight, reliable mechanical bond between the conductor and the grounding point.
  • Universal Design: Accepts a wide range of conductor sizes, simplifying inventory, sourcing, and specification for electrical contractors and distributors.
  • GH1 Series Reliability: Part of Appleton's established GH1 Series of universal ground clamps, built for consistent, field-proven performance.
  • Versatile Mounting: Designed to attach securely to conduit, ground rods, pipe, and other grounding electrode conductors commonly found in electrical systems.

Technical Specifications

  • Product Type: Universal Ground Clamp
  • Series: GH1 Series
  • Material: Malleable Iron
  • Finish: Hot-Dip Galvanized, Zinc Electroplated
  • Connection Type: Screw

Typical Applications

  • Commercial and Industrial Electrical Grounding
  • Conduit and Raceway Grounding Systems
  • Grounding Electrode and Ground Rod Connections
  • Panelboard and Service Entrance Grounding
  • Bonding and Equipment Grounding Conductor Terminations
  • New Construction and Electrical Renovation Projects

Why Appleton?

Appleton grounding hardware is built for electricians who need dependable, code-compliant connections that hold up over time in demanding field conditions. The GH1 Series Universal Ground Clamp combines a rugged malleable iron body with a hot-dip galvanized, zinc-electroplated finish and a secure screw connection, giving contractors and electrical distributors a grounding solution engineered for reliable, long-term performance across commercial, industrial, and renovation electrical installations.

Manufacturer Resources

Appleton Full Line Catalog

Product Specs

Product Type:
Ground Clamp
Product Finish:
Hot-Dip Galvanized
Connection Type:
Screw
Series:
GH1 Series
Product Material:
Malleable Iron
Department:
Electrical
Product Group:
Grounding & Bonding
Product Subgroup:
Grounding & Bonding

Appleton GH-100G – Frequently Asked Questions

1) What pipe or conduit sizes does the Appleton GH1 ground clamp fit?
The GH1 Series universal ground clamp comes in two trade sizes: one for 1 in. pipe/conduit (GH-100G) and one for 1-1/4 in. pipe/conduit (GH-125G). Pick the clamp by the outside trade size of the pipe, conduit, or ground rod you are bonding to, not by the conductor size.
2) What is the difference between the Appleton GH1 ground clamp and the NSi G Series bronze water pipe ground clamp?
The difference is the body material. The Appleton GH1 Series universal ground clamp uses a malleable iron body with a hot-dip galvanized, zinc-electroplated finish and a screw-type connection, sized by pipe or conduit trade size in 1 in. and 1-1/4 in. The NSi G Series is a heavy duty bronze ground clamp built for water pipe. Bronze is the traditional choice where the clamp lands directly on a copper water pipe and dissimilar-metal contact is a concern, while the galvanized malleable iron GH1 is aimed at conduit, ground rod, and grounding electrode connections in commercial and industrial work.
3) How does the conductor attach to the Appleton GH1 clamp, and do I need any extra hardware?
It is a screw-type clamp. The conductor is captured and tightened down with the clamp screw, so no lugs, crimps, or separate fasteners are needed to make the bond. The clamp is universal and takes a wide conductor range, so one part covers several conductor sizes on a job.
4) Is a malleable iron ground clamp the right choice, or should I use bronze on a water pipe?
Galvanized malleable iron is the rugged choice for conduit, raceway, ground rod, and general service-entrance bonding where impact resistance matters. On a copper water pipe, many electricians prefer bronze to keep dissimilar-metal corrosion out of the joint; the NSi Industries Heavy Duty Bronze Ground Clamp for Water Pipe covers that application.
5) Which ground clamp should I standardize on across a facility with both conduit grounding and buried electrode connections?
Most facilities carry two. The Appleton GH1 Series universal ground clamp in hot-dip galvanized malleable iron covers the above-grade work, conduit and raceway grounding, panelboard and service entrance connections, and bonding terminations, and stocks in 1 in. and 1-1/4 in. trade sizes. For the buried electrode connections, the NSi G-S Series bronze clamp is the heavy duty direct burial version, with the NSi G Series bronze clamp covering water pipe bonds. That split keeps each connection on a clamp built for its environment.
6) Is a bronze ground clamp a direct substitute for the Appleton GH1 on a conduit run?
Not automatically. The Appleton GH1 Series is ordered by pipe or conduit trade size, offered for 1 in. and 1-1/4 in. pipe or conduit, with a malleable iron body and a screw clamping mechanism. The NSi bronze clamps are cataloged by their intended service instead, the G Series for water pipe and the G-S Series for direct burial. Match the clamp to the trade size of the conduit or pipe it has to close around, and to whether the connection stays above grade, before treating one as a swap for the other.
7) What is the Appleton part number for a 1-1/4 inch galvanized ground clamp?
GH-125G is the 1-1/4 in. pipe/conduit version of the Appleton GH1 Series universal ground clamp; GH-100G is the 1 in. version. Both are the same hot-dip galvanized malleable iron body with a screw connection.
How fast can I get the Appleton GH-100G 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 Appleton GH-100G come with a warranty?
Absolutely. The Appleton GH-100G 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 Appleton GH-100G?
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 Appleton GH-100G from ZenSupply?
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