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Manufacturer Resources
Product Specs
- Connection Type:
- Tension
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Number Of Conductors:
- 1
- Product Group:
- Wire & Cable Management
- Product Type:
- Aluminum Service Wedge Clamp
- Selling Unit Of Measure:
- each
- Surface Finishing:
- Bare
- Type2:
- Cable gland connector
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- Length 12-3/4 in X Depth 2-3/8 in
- Installation Category:
- Yes
- Product Material:
- Iridited Aluminum
Blackburn W40-1B – Frequently Asked Questions
1) What conductor sizes does the Blackburn W40-1B wedge clamp take?
The W40-1B is a service entrance wedge clamp sized for a 4/0 run conductor with a 2/0 tap, and it handles one conductor per connection. That range is the deciding factor: if your service drop or tap falls outside 4/0 to 2/0, this is not the right clamp body.
2) Can I use an aluminum wedge clamp on copper service conductors?
The W40-1B body is iridited aluminum with a bare surface finish, so it is built for aluminum service conductors. Iridite is a conversion coating that limits oxidation on the aluminum itself; it is not a dual-rated copper-to-aluminum provision. For a copper run or tap, specify a connector rated AL/CU rather than this one.
3) What voltage is the Blackburn W40-1B wedge clamp rated for?
Rated to 35 kV, so it covers utility service entrance and primary distribution work, not just 600 V secondary. Note the clamp ships with no insulation on it, so any covering or boot needed for that voltage class is a separate item you supply.
4) How does a wedge clamp connection compare to a compression or bolted lug?
This one is a tension connector: the wedge is driven into the C-body and the spring tension of the body holds the conductors together, so no crimp die, no hydraulic tool head sized to the barrel, and no torque spec on a bolt. That makes it quick for overhead service entrance taps. If you need a connection you can take apart and reuse, a bolted split-bolt or lug is the better choice, since a driven wedge is a permanent connection.
5) How much room do I need to fit the W40-1B in a meter socket or weatherhead area?
Plan for a part measuring 12-3/4 inches in length by 2-3/8 inches in depth. That length is worth checking against tight gutter or trough space before you order, because the assembled clamp needs clearance along the conductor run.
6) Is the Blackburn W40-1B sold individually or in a bag?
It is sold each, one clamp per unit, under manufacturer part number W40-1B. Count one per tap connection when you are taking off a service.
7) Where is the Blackburn W40-1B manufactured?
Country of origin is Mexico. That is the detail a government or institutional buyer working under domestic sourcing rules needs up front before it goes on a submittal.
How fast can I get the Blackburn W40-1B 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 W40-1B come with a warranty?
Absolutely. The Blackburn W40-1B 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 W40-1B?
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 W40-1B 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.