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Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire & Cable Management
- Product Type:
- Copper Connectors
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Copper
Blackburn STC3104 – Frequently Asked Questions
1) What wire size range does the Blackburn STC3104 terminal accept?
The STC3104 is rated for stranded copper conductors from 4 STR through 3/0 STR. One conductor per connector, so if you need to land two cables you need two lugs or a two-conductor body.
2) Is the STC3104 a one-hole or two-hole lug?
One-hole mount. It lands on a single bolt or stud, which is the usual prep for panel and equipment ground bars. If your busbar is drilled for two-hole NEMA spacing, this is not the right part.
3) Is the Blackburn STC3104 a compression lug or a mechanical set-screw connector?
Mechanical. It terminates with a set screw, so you do not need a hydraulic crimper or dies to install it, just the correct hex key or driver and a torque check. That makes it practical for field service and retrofit work where a crimp tool is not on the truck.
4) Can I use the STC3104 on aluminum conductors?
It is a copper connector, listed for copper. For aluminum or dual-rated AL/CU service, choose a connector marked AL9CU instead.
5) Is the Blackburn STC3104 UL listed for an inspected installation?
Yes, it carries UL file E9809. That is the reference an inspector or a spec engineer will want when the lug is used on a service ground or equipment bonding connection.
6) What does the tang on the STC3104 mean for how it mounts?
The tang is the flat mounting foot with the bolt hole, coming off the barrel that the conductor enters. You bolt the tang flat to the bar, pad, or equipment lug pad and run the cable in from the barrel end, so allow room for the cable bend radius behind the mounting point.
7) Is the Blackburn STC3104 sold individually or in a bag of multiples?
Sold each, so order one per conductor termination. On a three-phase feeder plus neutral you would need four.
8) Where is the Blackburn STC3104 made? I need country of origin for a government job.
Country of origin is Mexico. That is the figure to cite on Buy American or trade-compliance paperwork for public bid work.
How fast can I get the Blackburn STC3104 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 STC3104 come with a warranty?
Absolutely. The Blackburn STC3104 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 STC3104?
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 STC3104 from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.