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Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Number Of Conductors:
- 2
- Product Group:
- Wire & Cable Management
- Product Type:
- H-Type Compression Tap Connector
- Selling Unit Of Measure:
- each
- Standards:
- RUS Accepted. Complies with ANSI C119.4 Specifications
- Temperature Range:
- up to 90 °C
- Type2:
- Wire connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- Length 2-3/16 inch
- Installation Category:
- None
Blackburn WR389 – Frequently Asked Questions
1) What conductor sizes does the Blackburn WR389 H-tap connector take?
The WR389 is sized for a 4/0 ACSR main run with a 3/0 ACSR tap. It's a two-conductor connector, so one main and one tap per piece, and it is sold each. If your run or tap is a different size, pick the H-tap catalogued for that combination instead, because a compression H-tap only makes a proper joint on the conductor range it was die-matched to.
2) Is the WR389 a bolted split-bolt or a crimp connector?
It's compression only. The WR389 H-tap is crimped with a hydraulic or battery compression tool, not bolted, so there's no re-tightening and no torque spec to chase. If you need a joint you can open later for testing, a bolted split-bolt or a mechanical tap is the better choice; a compressed H-tap is permanent.
3) Will this H-tap meet utility and co-op specs for a distribution tap?
It's RUS Accepted and complies with ANSI C119.4, which is the standard that covers connectors for use between aluminum and copper conductors on distribution systems. That combination is what rural electric co-ops and most utility specs ask for on a tap connector.
4) Does the WR389 come insulated, or do I need to cover it after crimping?
Bare aluminum, with no insulation on the body. Any covering, tape, or insulating cover is a separate item you add after the crimp, so plan for it on overhead taps or anywhere the joint needs to be sealed or protected.
5) Can I use the Blackburn WR389 on a 90 degree C rated circuit?
Yes, the WR389 is rated for operation up to 90 C, so it can be used on conductors terminated at the 90 C column without the connector being the limiting element. Ampacity still has to be taken at the lowest-rated component in the circuit.
6) Is the WR389 aluminum body OK for a copper tap off an ACSR main?
The WR389 is an aluminum-bodied H-tap built to ANSI C119.4, the standard covering connectors for aluminum-to-aluminum and aluminum-to-copper connections. Sizing here is called out in ACSR, 4/0 main and 3/0 tap, so match the actual conductor you have to that range and use the correct compression die for the barrel.
7) How much length do I need to fit a WR389 on the conductor?
The connector body is 2-3/16 inches long, so allow that plus tool clearance for the crimp head on both barrels. On a tight span or near a deadend it's worth measuring before you cut the tap conductor.
How fast can I get the Blackburn WR389 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 WR389 come with a warranty?
Absolutely. The Blackburn WR389 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 WR389?
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 WR389 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.