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Manufacturer Resources
Product Specs
- Country Of Origin:
- India (IN)
- Outside Diameter:
- 1/2 in
- Product Group:
- Wire & Cable Management
- Product Type:
- Two-Bolt Connector
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Copper
Blackburn 2B20W – Frequently Asked Questions
1) Is the Blackburn 2B20W copper or aluminum, and can I use it on aluminum conductors?
It is a copper-bodied connector. Use it on copper conductors. If your run is aluminum or you are mixing aluminum to copper, you want a dual-rated AL/CU mechanical connector instead, not this one.
2) Is the Blackburn 2B20W UL listed?
Yes. The 2B20W carries UL file E9809. That is the reference an inspector or a spec writer will want cited on a grounding or bonding submittal.
3) What does the 1/2 inch spec on the Blackburn 2B20W two-bolt connector refer to?
1/2 inch is the outside diameter called out for the 2B20W, matching the "1/2B" in the part number, which is the bolt/stud size the connector lands on. Check the diameter of the ground rod, bus stud, or bolt you are tapping to before ordering, because a mismatch there is the usual reason one of these gets sent back.
4) What is the spacer on the Blackburn 2B20W connector for?
The 2B20W is supplied with a spacer (the "W/SPCR" in the part description). The spacer sits in the conductor channel so the clamp bears correctly on smaller conductors within the 2 to 2/0 range instead of bottoming out. Leave it in for the smaller sizes, remove it for the larger ones.
5) Should I use a two-bolt mechanical connector like the 2B20W or an exothermic/compression connection?
A two-bolt mechanical connector like the 2B20W is the right call when the connection needs to be reusable, inspectable, or made without special tooling. It installs with a wrench. Compression lugs and exothermic welds give a permanent, non-reversible joint and need a die tool or a mold, so they suit direct-buried and irreversible grounding work better. For an accessible bond you can open and re-terminate later, the mechanical connector is the practical choice.
6) Do I order the Blackburn 2B20W individually or by the box?
It sells each, so one connector per unit ordered. Count your taps and order that quantity; there is no carton multiple to work around.
How fast can I get the Blackburn 2B20W 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 2B20W come with a warranty?
Absolutely. The Blackburn 2B20W 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 2B20W?
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 2B20W 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.