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HLC3974P
Manufacturer Resources
Product Specs
- Country Of Origin:
- India (IN)
- Product Group:
- Grounding & Bonding
- Product Type:
- Hot-Line Clamp Protected Thread
- Selling Unit Of Measure:
- each
- Surface Finishing:
- Tin-Plated
- Tap Size:
- 3/0 to #6 ACSR AWG4/0 STR AWG
- Type2:
- Electrical taps
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Ground Clamps
- Product Material:
- Bronze
Blackburn HLC3974P-1 – Frequently Asked Questions
1) What conductor sizes does the Blackburn HLC3974P-1 hot-line clamp take?
The HLC3974P-1 hot-line clamp is rated for a tap range of 3/0 to #6 ACSR and 4/0 stranded AWG. That covers most primary distribution tap work on overhead lines. If your conductor falls outside that range, you need a different clamp body.
2) Can this Blackburn hot-line clamp be used on a 35 kV distribution circuit?
Yes. The HLC3974P-1 carries a 35 kV voltage rating, so it is suited to primary distribution work up to that class. Do not apply it above 35 kV.
3) Is this the right part for bonding a ground rod or water pipe?
No. Despite sitting in the grounding and bonding family, the HLC3974P-1 is a hot-line tap clamp for energized overhead conductors rated to 35 kV, not a ground rod or pipe bonding clamp. For a ground rod or water pipe connection, use a direct-burial rated rod clamp or pipe ground clamp sized to your rod diameter and conductor.
4) What is the Blackburn HLC3974P-1 made of, and will it hold up outdoors?
Bronze body with a tin-plated finish. Tin plating over bronze is the standard overhead-line combination because it resists corrosion in weather and reduces galvanic issues when landing aluminum conductor such as ACSR against a copper-alloy clamp.
5) What does the protected thread on this hot-line clamp actually do for a lineman?
The HLC3974P-1 is a protected-thread hot-line clamp, meaning the eye-screw threads are shielded from weather and from arcing debris so the clamp can still be opened and re-torqued with a hot stick years after installation. Unprotected-thread clamps in the same range are cheaper but tend to seize up on a live line.
6) Is the Blackburn HLC3974P-1 sold as a single clamp or in a box?
It is sold each, so one order quantity equals one clamp. Buy per tap point rather than per pole when you are laying out a job.
7) Where is the Blackburn HLC3974P-1 manufactured?
Country of origin is India. Utility and municipal buyers with domestic-content or Buy America requirements on a funded project should factor that in before specifying it.
How fast can I get the Blackburn HLC3974P-1 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 HLC3974P-1 come with a warranty?
Absolutely. The Blackburn HLC3974P-1 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 HLC3974P-1?
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product
selection,
installation tips, and troubleshooting. Contact Us
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