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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- Copper C-Tap Grounding Connector
- Selling Unit Of Measure:
- each
- Standards:
- UL E3060, IEEE837-2014
- Type2:
- Wire or cable compression splice
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Copper
Blackburn CTP250250N – Frequently Asked Questions
1) What conductor sizes does the Blackburn CTP250250N C-tap take on the main and the tap?
The CTP250250N covers 3/0 through 500 kcmil on both the main run and the tap, so a single die set handles a 500 MCM feeder tapped with anything down to 3/0. Both sides share the same range, which means you can run main and tap at the same size if the design calls for it.
2) Can I use a Blackburn C-tap on aluminum conductors?
No. The CTP250250N is a copper connector and is intended for copper conductors only. For aluminum or mixed aluminum-to-copper taps you need a dual-rated compression connector or an approved bimetallic tap, not this one.
3) Is this a bolted connector or does it need to be crimped?
It is a compression connector. The CTP250250N is a wire or cable compression splice, so it is installed with a hydraulic or battery crimp tool and the correct C-tap die, not with a wrench. There is no bolt, no torque spec, and no re-opening it once crimped.
4) Is the Blackburn CTP250250N C-tap acceptable for a permanent grounding grid connection?
Yes. The C-tap is listed to UL E3060 and meets IEEE 837-2014, which is the standard for permanent connections used in substation grounding. That is what a utility or data center inspector looks for on a buried or inaccessible ground connection.
5) Do I need to insulate a C-tap after crimping it?
The CTP250250N ships as a bare copper compression tap with no insulation or cover. For grounding work below grade it is normally left bare. On energized conductors you add the insulating cover, tape, or shrink separately, since it is not included with the connector.
6) Is the Blackburn CTP250250N made in the USA for Buy American projects?
Country of origin on the CTP250250N C-tap is the United States, which is what federal, transit, and other domestic-preference jobs ask you to document for electrical connectors.
7) What is the exact part number to spec for a 500 MCM copper C-tap from Blackburn?
Blackburn CTP250250N. It is the copper C-tap covering 3/0 through 500 kcmil on main and tap, UL E3060 listed and IEEE 837-2014 compliant, so the full callout for a submittal is brand, part number, and those two standards.
8) Is the Blackburn CTP250250N sold individually or in a box?
It is sold each, so quantity ordered is the number of connectors you get. Order one per tap point and add spares for miscrimps, since a compression C-tap cannot be reused once it has been pressed.
How fast can I get the Blackburn CTP250250N 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 CTP250250N come with a warranty?
Absolutely. The Blackburn CTP250250N 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 CTP250250N?
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
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