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GRDGRIDCONN No2 OR No1-No2 OR 1 CU
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Material Of Conductor:
- Copper
- Product Group:
- Grounding & Bonding
- Product Type:
- E-Z-Ground Compression Grounding
- Selling Unit Of Measure:
- each
- Standards:
- UL E3060, CSA 2884
- Type2:
- Grounding devices or assemblies
- Department:
- Electrical
- Product Subgroup:
- Grounding Devices
Blackburn GG21-21 – Frequently Asked Questions
1) What conductor sizes does the Blackburn GG21-21 ground grid connector take?
The GG21-21 is a ground grid connector sized for No. 2 copper on the run, or a No. 1 to No. 2 copper combination, or a No. 1 copper conductor. It is a copper-conductor device, so use it on copper grounding conductors only, not aluminum.
2) Is the GG21-21 a compression connector or a mechanical lug?
It's a compression fitting. The GG21-21 belongs to Blackburn's E-Z-Ground compression grounding line, so it is crimped onto the grounding conductors with a compression tool and die rather than tightened with a set screw. If you need a connection you can take apart later for testing, a mechanical or bolted grounding connector is the better choice.
3) Can I use the GG21-21 for a direct-burial or concrete-encased ground grid splice?
Yes. Compression ground grid connectors like the GG21-21 are made for the tap and splice points in a buried grounding grid, and the listing under UL E3060 and CSA 2884 is the grounding and bonding connector listing inspectors look for on those connections. It is a copper-only device, so the grid conductor and the tap both need to be copper.
4) Is the Blackburn GG21-21 made in the USA for a Buy American job?
Country of origin on the GG21-21 grounding connector is the United States, which is what agency and federal procurement specs generally want documented on grounding hardware.
5) Does the Blackburn GG21-21 come in a multi-pack or is it sold one at a time?
The GG21-21 ground grid connector is sold each, so order one per connection point. On a grid run, count your crossings and taps and order accordingly.
6) What part number do I give my distributor for this Blackburn ground grid connector?
Order it as Blackburn GG21-21. That's the manufacturer part number, and it identifies the copper compression ground grid connector for No. 2, No. 1 to No. 2, or No. 1 copper.
How fast can I get the Blackburn GG21-21 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 GG21-21 come with a warranty?
Absolutely. The Blackburn GG21-21 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 GG21-21?
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
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