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Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- United States (US)
- Insulation Material:
- None
- Product Group:
- Wire & Cable Management
- Product Type:
- Compression Splice Tapered Reducer
- Selling Unit Of Measure:
- each
- Standards:
- ANSI C119.4
- Surface Finishing:
- Tin Plated
- Type2:
- Wire or cable compression splice
- Department:
- Electrical
- Product Subgroup:
- Tap Connectors
- Product Size:
- 9.875 inch long
Blackburn ATC 5789 – Frequently Asked Questions
1) What does the Blackburn ATC 5789 tapered reducer actually do in a cable run?
The ATC 5789 is a compression splice tapered reducer, so it joins two different conductor sizes end to end in one barrel, stepping 1000 down to 750. You crimp it with a compression tool rather than bolting it, and it is sold one piece at a time.
2) Is the Blackburn ATC 5789 reducer insulated, or do I have to tape or sleeve it after crimping?
It ships bare. Insulation material is listed as none, so the splice needs to be re-insulated in the field with tape, a heat shrink sleeve, or a cold shrink tube, or installed inside an enclosure where bare copper-to-aluminum conductors are acceptable.
3) Can I use a tin plated aluminum compression reducer on copper conductors?
Yes. The ATC 5789 is tin plated, which is what makes an aluminum-bodied compression connector suitable for copper as well as aluminum, and it is rated to ANSI C119.4, the standard covering connectors for aluminum and copper conductors.
4) How much room do I need in the pull box for a Blackburn ATC 5789 splice?
The barrel is 9.875 inches long, so plan on at least that much straight, clear conductor plus bending room on each side. In a tight wireway or a shallow gutter that length is the thing that usually decides whether the splice fits.
5) Does the ATC 5789 reducer come with shear bolts or setscrews?
No. It is a compression-only connector, crimped with a hydraulic tool and the correct die set. If you want a splice that installs with a wrench instead of a crimper, you need a mechanical or shear-bolt reducer, not this one.
6) Is the Blackburn ATC 5789 made in the USA for a Buy American job?
Country of origin on the ATC 5789 is the United States, which is the line a government, school, or transit procurement package usually wants documented.
7) What is the exact part number to spec for a Blackburn 1000 to 750 aluminum compression reducer?
Blackburn ATC 5789 is the manufacturer part number, a tin plated aluminum tap compression reducer sized 1000 to 750.
8) Do I order the ATC 5789 in packs or as single pieces?
Single pieces. The selling unit is each, so a splice count is a piece count, one connector per conductor being reduced. A three-phase reduction takes three.
How fast can I get the Blackburn ATC 5789 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 ATC 5789 come with a warranty?
Absolutely. The Blackburn ATC 5789 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 ATC 5789?
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selection,
installation tips, and troubleshooting. Contact Us
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