You may also like
AL HTYPE COMP CONN 397-266 397-266
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 3 inch
- Installation Category:
- None
Blackburn WR779 – Frequently Asked Questions
1) What conductor sizes does the Blackburn WR779 H-tap connector take on the run and the tap?
The WR779 is sized 397-266 on the main run and 397-266 on the tap, so it joins aluminum conductors in that 397.5 to 266.8 kcmil range on both legs. It is a two-conductor connector, one run and one tap, not a multi-tap body.
2) Is the WR779 an aluminum connector, and can I use it on copper?
It is an aluminum H-type compression tap connector, per the AL designation in the part description. Use it for aluminum-to-aluminum runs and taps. For a copper run or a copper-to-aluminum transition you need a connector rated for that combination instead.
3) Do I need a hydraulic crimper for this H-tap, or can it be bolted?
Compression only. The WR779 is a compression connector, so it has to be crimped with the matching die in a hydraulic or battery compression tool. There is no bolt or set screw on an H-tap body, and hand pliers will not give a compliant crimp.
4) Does the Blackburn WR779 meet ANSI C119.4 and is it accepted for RUS utility work?
Yes on both counts. The WR779 complies with ANSI C119.4 specifications for connectors used in underground and overhead power distribution, and it is RUS Accepted, which matters on rural electrification and utility-funded projects that require RUS listed material.
5) Is the WR779 insulated, or do I have to tape or sleeve the connection?
It is a bare connector with no insulation material, so the finished tap has to be insulated in the field, typically with tape, a cold shrink or heat shrink sleeve, or a molded cover sized for the H-tap body. The body measures 3 inches long, so size the sleeve accordingly.
6) What is the temperature rating on this H-tap connector?
Rated up to 90 degrees C, which lines it up with 90 C rated conductor insulation such as XHHW-2 on the aluminum feeders it is typically used to tap.
7) Will a 3 inch H-tap fit in my existing pedestal or junction enclosure?
The WR779 body is 3 inches long. Add the bend radius of the two aluminum conductors and any insulating sleeve you put over it, and that is the space you need inside a pedestal, handhole, or gutter. In tight enclosures it is worth laying it out before you crimp, since a compression tap cannot be repositioned afterward.
8) How do I confirm I am ordering the right Blackburn H-tap for my splice?
Order by manufacturer part number WR779 and match the conductor range stamped in the description, 397-266 run and 397-266 tap. Blackburn H-taps are range specific, so a connector one size off will either not accept the conductor or will not crimp to a compliant ANSI C119.4 connection.
9) Is the WR779 sold individually or in a bag?
Sold each, one connector per unit, so order the exact count of taps you are making rather than a carton quantity.
How fast can I get the Blackburn WR779 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 WR779 come with a warranty?
Absolutely. The Blackburn WR779 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 WR779?
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 WR779 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.