You may also like
AL SERVENTR COMP SPLICE A:1-2 B:8
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 Service Entrance
- Selling Unit Of Measure:
- each
- Standards:
- RUS Accepted. Complies with ANSI C119.4 when properly installed on Aluminum-to-Aluminum or Aluminum-to-Copper Conductors. UL E9809
- Type2:
- Wire or cable compression splice
- Department:
- Electrical
- Product Subgroup:
- Splices
- Product Size:
- 2 Inch
- Installation Category:
- None
Blackburn CS70 – Frequently Asked Questions
1) What wire sizes does the Blackburn CS70 service entrance splice take?
The CS70 is a two-conductor service entrance compression splice with dissimilar barrels: the A side takes 1 through 2 AWG and the B side takes 8 AWG. That run-to-tap arrangement is what makes it a service entrance splice rather than a straight inline connector, so check both conductors against the A and B sides before you crimp.
2) Can I use the Blackburn CS70 to splice aluminum to copper?
Yes. The CS70 complies with ANSI C119.4 when properly installed on aluminum-to-aluminum or aluminum-to-copper conductors, so it is a dual-rated AL/CU splice. It is also UL listed under E9809 and RUS accepted, which matters on utility and co-op work.
3) Is the Blackburn CS70 a crimp connector or a setscrew/mechanical type?
It is a compression connector, so it needs a hydraulic or battery crimp tool with the correct die, not a wrench. Compression splices give a permanent, tamper-resistant joint and are what utilities and inspectors typically expect at the service entrance; if you need a joint you can open later for testing, a mechanical setscrew splice is the better choice.
4) Does the Blackburn CS70 splice come insulated or do I need to cover it?
Bare metal, no insulation on the connector itself. You finish the joint yourself with tape, heat shrink, or a cold shrink sleeve, and on aluminum conductors you also want an oxide inhibitor compound in the barrel before crimping.
5) Is the CS70 sold individually or in a bag of multiples?
Sold each, so the quantity you order is the number of splices you get. Order one per conductor joint, not one per service.
6) What is the Blackburn part number and where is the CS70 made?
The part is Blackburn CS70, an aluminum-bodied service entrance compression splice built in Mexico. That is the number to quote for a direct replacement.
How fast can I get the Blackburn CS70 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 CS70 come with a warranty?
Absolutely. The Blackburn CS70 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 CS70?
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 CS70 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.