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HLC39741
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
- Tap Size:
- 4/0 STR AWG#6 SOL AWG
- Type2:
- Electrical taps
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Ground Clamps
- Product Material:
- Bronze
Blackburn HLC3974-1 – Frequently Asked Questions
1) What conductor sizes does the Blackburn HLC3974-1 hot-line clamp accept?
The HLC3974-1 is rated for a main run of 4/0 stranded down to a #6 solid tap, so it covers a wide span of primary conductor and tap combinations on the same clamp. If your tap wire is smaller than #6 solid or your main is larger than 4/0 stranded, you need a different clamp size in the HLC line.
2) What voltage can this hot-line clamp be used at?
35 kV is the rating on the HLC3974-1, which puts it in medium-voltage distribution work rather than secondary or service-entrance use. Do not apply it above 35 kV.
3) Is the HLC3974-1 clamp body bronze or aluminum?
Bronze. That matters for two reasons on a utility job: bronze is the usual choice where the clamp stays on copper conductor, and mixing bare aluminum against copper at an outdoor tap invites galvanic corrosion. If your run and tap are aluminum, specify an aluminum-bodied or dual-rated clamp instead.
4) What does "protected thread" mean on this Blackburn hot-line clamp?
The eye screw threads on the HLC3974-1 are shielded rather than left open to weather, so the clamp can be hot-sticked open and closed after years on the line without the thread seizing from corrosion or grit. It is the feature you want on a tap that will be worked live again later.
5) Is a hot-line clamp like the HLC3974-1 the right choice, or should I use a compression tap?
A hot-line clamp is the bolted, reusable option: it can be installed or removed with a hot stick on an energized conductor and taken back off later, which is what you want for temporary taps, switching, or anything that gets reworked. A compression connector is a permanent crimp, better for a tap that will never be opened again. The HLC3974-1 is the bolted type, rated to 35 kV.
6) Is the Blackburn HLC3974-1 sold individually or in a box?
It sells each, one clamp per unit, so you can order the exact count your tap points require rather than a carton. Manufacturer part number is HLC3974-1 (also written HLC39741).
7) Can I use this clamp for grounding and bonding connections as well as line taps?
It is a grounding and bonding component used as an electrical tap, so the same clamp serves for making a tap onto an energized conductor and for the temporary connections crews make in that work. Sizing still governs: main up to 4/0 stranded, tap down to #6 solid.
8) Where is the Blackburn HLC3974-1 manufactured?
It is made in India. Utility and municipal buyers with domestic-sourcing requirements on a project should take that into account when specifying.
How fast can I get the Blackburn HLC3974-1 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 HLC3974-1 come with a warranty?
Absolutely. The Blackburn HLC3974-1 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 HLC3974-1?
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installation tips, and troubleshooting. Contact Us
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