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Manufacturer Resources
Product Specs
- Country Of Origin:
- India (IN)
- Material Of Conductor:
- Copper
- Product Group:
- Grounding & Bonding
- Product Net Depth Length:
- 6-1/16 in
- Product Type:
- Ground Clamp
- Selling Unit Of Measure:
- each
- Standards:
- UL E3060, CSA 12798
- Type2:
- Grounding devices or assemblies
- Department:
- Electrical
- Product Subgroup:
- Ground Clamps
Blackburn GUV31221 – Frequently Asked Questions
1) What conductor sizes does the Blackburn GUV31221 U-bolt ground clamp take?
The GUV31221 is a U-bolt ground clamp rated for 2/0 through 4 conductor, so it covers the common range from a 4 AWG grounding electrode conductor up to 2/0 service-size copper. If your ground wire falls outside that band, this is the wrong clamp.
2) Can I use the GUV31221 clamp with aluminum ground wire?
The conductor material on the GUV31221 is specified as copper. Spec it for copper grounding conductors; for aluminum or copper-clad runs, pick a clamp listed for that conductor material instead.
3) What is a U-bolt ground clamp used for versus a strap or pipe clamp?
A U-bolt clamp like the GUV31221 bolts a grounding conductor down against a rod or pipe electrode, with the U-bolt pulling the conductor into the body for the pressure connection. It suits ground rod and pipe electrode terminations where you want a mechanical, re-torquable connection rather than a one-piece strap or an exothermic weld.
4) Do I get one clamp or a box when I order the GUV31221?
It sells each, so one order quantity equals one clamp. Multiply by the number of electrode connections on the job when you are buying for a panel-swap or service-upgrade fleet.
How fast can I get the Blackburn GUV31221 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 Blackburn GUV31221 come with a warranty?
Absolutely. The Blackburn GUV31221 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 Blackburn GUV31221?
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 Blackburn GUV31221 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.