NSI Industries L3014 - 1 Hole Long Barrel Copper Compression Lug 3/0 AWG - 1/4" Bolt Long Barrel Copper Compression Lugs are produced from high conductivity copper tubing. They are tin-plated to provide corrosion low contact resistance. Marked with die index and color coded for easy reference. Listed for 35KV maximum when properly installed and to cable manufacturer instructions. Temperature rating 90 degrees C. .
NSI Industries

L3014

UPC: 662381335845

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Overview

The NSI Industries L3014 is a high-conductivity copper compression lug designed for reliable electrical terminations. Manufactured from premium copper tubing, this long barrel lug ensures superior conductivity and low contact resistance, further enhanced by its tin plating which provides excellent corrosion resistance. The L3014 is specifically engineered for 3/0 AWG conductors and features a 1/4" bolt size for secure fastening. It is UL486A Listed as a wire connector and UL467 Listed for grounding and bonding applications (for sizes 8 AWG - 3/0 AWG). This lug boasts a temperature rating of 90°C and is suitable for use in systems up to 600V, with a special listing for 35KV maximum when properly installed according to cable manufacturer instructions. For applications exceeding 2000V, consult the cable manufacturer for specific voltage stress relief instructions. Each lug is clearly marked with its die index and color-coded for easy identification and reference during installation, simplifying inventory management and ensuring the correct tooling is used. The long barrel design provides ample surface area for a robust and secure crimp, minimizing the risk of pull-out and ensuring long-term electrical integrity. Manufactured in the USA, the L3014 is a dependable choice for critical power distribution and grounding applications where performance and safety are paramount. Its construction from high-conductivity copper tubing and tin plating make it resistant to environmental factors, ensuring consistent performance over its operational lifespan. The L3014 is ideal for use with Class B or C building wire (CU cable only) and adheres to NEC 310.15 standards for maximum ampacity, though users should always consult their current NEC manual for specific application requirements.
  • Constructed from high-conductivity copper tubing for optimal electrical performance.
  • Tin-plated for superior corrosion resistance and low contact resistance.
  • Long barrel design ensures a secure and reliable crimp connection.
  • UL486A Listed Wire Connector and UL467 Listed for Grounding & Bonding.
  • Rated for 90°C and suitable for 600V systems, with a 35KV max listing.

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
3/0 AWG (STR)
Color
Orange
Connection Type
Compression Lug
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
1/4 Mounting Hole IN
Number Of Holes
1
Size
3/0 AWG - 1/4" Bolt
Size
L=2.795 - W=.902 - OD=.622 - ID=.492 IN
Special Features
3/0 AWG (STR) - 1/4 Mounting Hole
Standard
UL486A/B, UL467 (8 AWG -3/0 AWG)
Stud Size
1/4 IN
Type
Long Barrel - One Hole
Voltage Rating
35 kV
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
2.795 IN x 0.902 IN x 0.622 IN
Package Dimensions (L x W x H)
7.0993 cm x 22.9108 mm x 15.7988 mm
Package Weight (Imperial)
2.375 L
Package Weight (Metric)
1.077 kg
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How to Install NSI Copper Compression Connectors

Install and crimp NSI copper compression lugs or splices on concentric, compressed, or compact copper conductors. Select the correct connector size, prepare the conductor, and crimp it with the approved tool and die set.

Estimated time: 15m

Tools needed:

Wire stripper, Wire brush, Approved crimp tool or mechanical crimp tool, Approved dies for the selected connector size

Supplies needed:

NSI copper compression lug or splice connector, Copper conductor cable, Optional NSI M-250 or M-500 mechanical crimp tool for large cable sizes, Optional NSI N12ID dieless crimp tool, Optional NSI N1240 tool

  1. Select the correct connector

    Choose the proper NSI lug or splice connector for the cable size and conductor type. Verify that the connector series and barrel style match the application before starting. Do not use an undersized or mismatched connector.

  2. Prepare the conductor

    Carefully strip the insulation from the conductor without nicking the strands. Strip only enough length so the conductor can be fully inserted into the connector barrel and completely fill it. Safety warning: damaged strands can reduce conductivity and connection quality.

  3. Clean the stripped conductor

    Wire brush the stripped portion of the conductor to remove any oxide film or contamination. Make sure the exposed conductor is clean and dry before insertion.

  4. Insert the conductor fully

    Insert the stripped conductor completely into the connector barrel until it is fully seated. Confirm that the conductor fills the barrel and that no bare conductor is left exposed outside the connector.

  5. Crimp the connector

    Use an approved UL-listed crimp tool and the correct die set for the connector size. Follow the barrel markings for suggested crimp locations when using N12ID or N1240 tools, and make the required number of crimps for the connector series. Long-barrel lugs and splices require twice as many crimps as shown in the parenthesis.

  6. Verify the finished connection

    Inspect the crimped connector to confirm it is fully compressed and properly aligned. Check that the conductor cannot be pulled out and that the connection matches the required crimp count and tool specification for the selected size.

Frequently Asked Questions about NSI Industries

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Tork offers a comprehensive range of technical support services, including 24/7 customer support, on-site service management, and a technical hotline network. With three advanced technical support centers and over 8,000 hours of technical training conducted annually, Tork ensures certified expertise across 25+ languages to assist customers effectively. Their commitment to service is reflected in a 98% Service Level Agreement compliance rate, providing reliable support for all operational needs.

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