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Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire & Cable Management
- Product Type:
- Split-Bolt
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Surface Finishing:
- Electro Tin-Plated
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Copper Alloy
Blackburn 20HPW – Frequently Asked Questions
1) What wire sizes does the Blackburn 20HPW split-bolt connector take?
The 20HPW is rated for solid conductors from 2/0 solid down to 6 solid. That range is the whole working window for this connector, so if you are tapping stranded cable or anything outside 2/0 to 6 solid, pick a different split bolt. It is sold each, not in a bag or kit.
2) Can I use the Blackburn 20HPW split bolt on aluminum conductors, or copper only?
It is an aluminum-rated split bolt, so it takes aluminum as well as copper within its 2/0 solid to 6 solid range. The body is copper alloy with an electro tin-plated finish, which is what makes it suitable for aluminum and for mixed aluminum-to-copper taps where the connector is listed for that use.
3) Is the Blackburn 20HPW UL listed for an inspected job?
Yes. The 20HPW carries UL file E9809 as a mechanical connector, which is what an inspector will want to see on a service or grounding tap. Spec it by manufacturer part number 20HPW.
4) What does the W in Blackburn 20HPW mean, and is a spacer included?
The 20HPW ships with the spacer (separator) already included. The spacer sits between the two conductors so you can join dissimilar or widely different-size wires without them nesting together. You do not order it separately.
5) Do I need to tape or insulate a Blackburn 20HPW split bolt after I install it?
Yes. A split bolt is a bare mechanical connector, not an insulated device, so the completed tap has to be insulated in the field with tape, a split-bolt cover, or heat shrink to match the conductor insulation rating. Order that covering along with the connector.
6) Will the Blackburn 20HPW work for a stranded 2/0 feeder tap?
No. The 20HPW is specified for 2/0 solid through 6 solid conductors. For stranded cable, use a split bolt whose range is listed for stranded in the size you are joining rather than forcing this one.
7) Why is the Blackburn 20HPW tin-plated instead of plain bronze?
The electro tin plating over the copper alloy body is there to limit galvanic corrosion when the connector contacts aluminum conductors and to hold up in damp or outdoor pull boxes. If you are tapping aluminum feeders, tin plating is the finish you want.
8) Where is the Blackburn 20HPW connector made?
The 20HPW split bolt is manufactured in Mexico. That matters on jobs where country of origin has to be recorded for procurement or domestic-preference documentation.
How fast can I get the Blackburn 20HPW 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 20HPW come with a warranty?
Absolutely. The Blackburn 20HPW 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 20HPW?
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 20HPW 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.