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GRD CLAMP .5 - 1 No4-4/0 DIRECTBURY
Manufacturer Resources
Product Specs
- Insulation Material:
- N
- Material Of Conductor:
- Bronze
- Number Of Batteries:
- 0
- Package Level 1 Depth Length:
- 6.25 in159 mm
- Package Level 1 Height:
- 4.25 in108 mm
- Package Level 1 Units:
- 5 piece
- Package Level 1 Width:
- 4.75 in121 mm
- Package Level 2 Depth Length:
- 21.62 in549 mm
- Package Level 2 Height:
- 6.62 in168 mm
- Package Level 2 Units:
- 25 piece
- Package Level 2 Width:
- 5.12 in130 mm
- Product Group:
- Grounding & Bonding
- Product Net Depth Length:
- 3.5 in
- Product Type:
- Grounding devices or assemblies
- Type2:
- Grounding devices or assemblies
- Department:
- Electrical
- Product Subgroup:
- Ground Clamps
Blackburn GPL3902BU – Frequently Asked Questions
1) What size grounding electrode conductor does this Blackburn clamp accept?
It takes #4 AWG up through 4/0 AWG. That range covers typical service grounding electrode conductors on residential through light commercial jobs. If your conductor is smaller than #4, you want a clamp rated down to #8 or #10 instead.
2) Can this ground clamp be buried in soil or encased in concrete?
Yes, the GPL3902BU is a direct burial clamp, so it is intended for below-grade connections at a ground rod or buried pipe rather than exposed indoor use only.
3) What is the clamp body made of, and will it hold up against copper conductor in wet soil?
Bronze construction. Bronze on copper is the normal pairing for buried grounding connections because the two metals are close enough electrochemically to avoid the galvanic attack you get with dissimilar metal combinations in damp earth.
4) How does a direct burial ground clamp differ from a standard water pipe ground clamp?
Both bite onto pipe and terminate the grounding electrode conductor, but a direct burial clamp like the GPL3902BU is built to stay in contact once it is covered with soil or concrete, where a standard indoor pipe clamp is only meant for accessible above-grade connections. If the connection will be buried at a rod or under a slab, use the direct burial version.
5) How many clamps come in a pack of the Blackburn GPL3902BU?
They pack 5 pieces to the inner carton and 25 pieces to the master carton, which is the practical buy for an electrician grounding a run of services or a panel replacement program across multiple units.
6) How much room do I need around the pipe to install this clamp?
The clamp measures 3.5 inches on its net depth/length dimension, so allow at least that much clear space around the pipe or rod to seat the body and get a wrench on the hardware. Tight chases and closely spaced pipe runs are where installers run into trouble.
How fast can I get the Blackburn GPL3902BU 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 GPL3902BU come with a warranty?
Absolutely. The Blackburn GPL3902BU 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 GPL3902BU?
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the Blackburn GPL3902BU from ZenSupply?
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and
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every order.
Our team is always ready to help you choose the right product for your project.