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AL 13-1/2IN TENSION COMP SPLICE 477
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:
- Compression Splice
- Selling Unit Of Measure:
- each
- Standards:
- ANSI C119.4
- Type2:
- Wire or cable compression splice
- Department:
- Electrical
- Product Subgroup:
- Splices
- Product Size:
- 13-1/2 inch
- Installation Category:
- None
Blackburn AC477 – Frequently Asked Questions
1) Is the Blackburn AC477 a full-tension splice or just a repair sleeve?
The AC477 is a full-tension aluminum compression splice, built to carry the mechanical load of the conductor across the joint rather than just restore the electrical path. That means it can be used in a span, not only in slack or jumper positions. It meets ANSI C119.4, the standard covering connectors for aluminum and copper conductors.
2) What conductor size does the Blackburn AC477 splice?
It is sized for 477 aluminum conductor, which is what the 477 in the model number refers to. It joins two conductor ends, one in each barrel. If your run is a different kcmil size, you need the matching AC-series splice for that size, not this one, because compression splices are size specific and a mismatch will not crimp to spec.
3) Is the AC477 aluminum only, or can I splice copper to aluminum with it?
It is an aluminum-bodied splice intended for aluminum conductor on both ends. For a copper to aluminum transition you want a connector specifically marked for dual-rated or bimetallic use, since dissimilar metals in a straight aluminum barrel invite galvanic corrosion at the joint. The ANSI C119.4 listing covers the connector's performance class, not a license to mix metals in it.
4) How long is the Blackburn AC477 compression splice?
13-1/2 inches overall. Plan for that much straight, accessible conductor when you set up the crimp, plus room for the compression tool head to travel the full length of the barrel. In a tight pull-through or close to a deadend, that length is often what decides whether you can make the joint in place.
5) Does the AC477 splice come insulated or do I need to cover it?
No insulation on it. The AC477 is a bare aluminum compression barrel, so on any application needing a covered joint you supply the insulation separately, whether that is heat shrink, a cover kit, or tape build-up. On overhead bare conductor work no covering is normally used.
6) Can I install this Blackburn splice with a bolt-on tool or do I need a hydraulic compression tool?
It is a compression connector, so it has to be crimped with a hydraulic compression tool and the correct die for the barrel diameter. There is no bolted or mechanical alternative on this part. If the job needs a joint you can make with hand tools, look at a bolted mechanical splice instead of the AC477.
7) Do Blackburn AC477 splices ship in a box quantity or can I buy one?
Sold individually, each. Useful when you only need a single joint for a repair; for a full reconductoring job, count your splice points and order to that number.
8) Where is the Blackburn AC477 splice made?
Manufactured in Mexico. That matters on public and utility work where country of origin has to be documented on the submittal or where domestic-preference language applies to the contract.
How fast can I get the Blackburn AC477 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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U.S.
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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 AC477 come with a warranty?
Absolutely. The Blackburn AC477 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 AC477?
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