NSI Industries L656P - 1 Hole Long Barrel Copper Compression Lug with Peep Hole 6 AWG - 5/16" 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

L656P

UPC: 662381336170


Documents & Media
Technical BulletinInstallation Instructions

Contact for Pricing

Overview

NSI Industries L656P 1 Hole Long Barrel Copper Compression Lug with Peep Hole is a high-conductivity copper compression connector designed for reliable electrical terminations in industrial and commercial applications. Engineered from premium copper tubing with a tin-plated finish, this lug ensures low contact resistance and superior corrosion resistance, making it ideal for grounding and bonding systems where long-term performance is critical. Key specifications include a wire range of 6 AWG, a 5/16" bolt size, and a barrel length of 0.370 inches with an outer diameter of 0.469 inches. The lug features a peep hole for visual inspection of cable insertion, ensuring proper termination and compliance with safety standards. Color-coded and die-index marked for easy identification, the L656P is UL486A and UL467 listed, supporting applications up to 35KV when installed per manufacturer instructions. Temperature rated to 90°C and suitable for 600V systems, this lug is optimized for Class B or C building wire copper cable. The compact design with a width of 0.370 inches and a tang thickness of 0.106 inches makes it compatible with standard mounting configurations. Trusted by professionals for its durability and precision, the L656P delivers consistent performance in high-voltage and high-current environments, from power distribution to renewable energy installations.
  • High-conductivity copper construction with tin-plated finish for corrosion resistance and low contact resistance
  • 1-hole design with peep hole for visual inspection of cable insertion and proper termination
  • UL486A and UL467 listed for grounding and bonding applications up to 35KV
  • Wire range: 6 AWG, bolt size: 5/16", barrel length: 0.370", temperature rating: 90°C
  • Color-coded and die-index marked for easy identification and installation

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
# 6 AWG (STR)
Color
Blue
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
5/16 Mounting Hole IN
Number Of Holes
1
Size
L=1.91 - W=.591 - OD=.300 - ID=.200 IN
Special Features
# 6 AWG (STR) - 5/16 Mounting Hole
Standard
UL486A/B, UL467 (8 AWG -3/0 AWG)
Stud Size
5/16 IN
Type
Long Barrel - One Hole With Peep Hole
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
1.91 IN x 0.59 IN x 0.295 IN
Package Dimensions (L x W x H)
4.8514 cm x 14.986 mm x 7.493 mm
Package Weight (Imperial)
2.200 L
Package Weight (Metric)
0.998 kg
Mechanical Crimp Tool with 5/8 Inch Nose Die APPLICATIONS: Designed for use with wide range and H-Tap connectors. It has fiberglass handles and comes with "O" and "D" Nose Dies. It has an output of 4.5 tons.

OD581

Mechanical Crimp Tool with 5/8 Inch Nose Die APPLICATIONS: Designed for use with wide range and H-Tap connectors. It has fiberglass handles and comes with "O" and "D" Nose Dies. It has an output of 4.5 tons.
O' Die for OD581 Mechanical Crimp Tool

OJB

O' Die for OD581 Mechanical Crimp Tool
U-Type Compression Die - Pink 1/0 AWG Copper - 2 AWG Aluminum U-Shaped Compression Dies are for use with the NSi-12 Compression Tool and Other Tools. See Cross-Reference Chart below.

CD6A

U-Type Compression Die - Pink 1/0 AWG Copper - 2 AWG Aluminum U-Shaped Compression Dies are for use with the NSi-12 Compression Tool and Other Tools. See Cross-Reference Chart below.
U-Type Compression Die - Black 2/0 AWG Copper U-Shaped Compression Dies are for use with the NSi-12 Compression Tool and Other Tools. See Cross-Reference Chart below.

CD7

U-Type Compression Die - Black 2/0 AWG Copper U-Shaped Compression Dies are for use with the NSi-12 Compression Tool and Other Tools. See Cross-Reference Chart below.
Non-Insulated Parallel Splice Connector For Wire Range 6 For Circular Mil Range 20,800-33,100 Length .5 Diameter .365,Metallic

E6-PS-D

Non-Insulated Parallel Splice Connector For Wire Range 6 For Circular Mil Range 20,800-33,100 Length .5 Diameter .365,Metallic
Power Distribution Block (1) 2/0-14 AWG Primary (6) 4-14 AWG Secondary Power Distribution Blocks are made of high strength, high-conductivity aluminum alloy and are mounted in a high-strength glass-filled polyester base. Each block can stand alone or combine with other blocks to form a multi-block set.

AS-K1-H6

Power Distribution Block (1) 2/0-14 AWG Primary (6) 4-14 AWG Secondary Power Distribution Blocks are made of high strength, high-conductivity aluminum alloy and are mounted in a high-strength glass-filled polyester base. Each block can stand alone or combine with other blocks to form a multi-block set.
PVC Coated Junction Box, 12 Inch X 12 Inch X 6 Inch, 14 Gauge, Gray

A1212SC-G

PVC Coated Junction Box, 12 Inch X 12 Inch X 6 Inch, 14 Gauge, Gray
Molded Junction Box, Length 4 Inch x Width 4 Inch x Depth 2 Inch, Material Polycarbonate, Color Gray

E989NNJ-5-HD

Molded Junction Box, Length 4 Inch x Width 4 Inch x Depth 2 Inch, Material Polycarbonate, Color Gray
Combine high performance with compact dimensions: - 1000 V AC / DC IEC 600 V UL, - Opt for the best marking visibility thanks to the up-front, flat marker zone, which lets you mark up to eight digits or increase the font size.

1SNK705010R0000

Combine high performance with compact dimensions: - 1000 V AC / DC IEC 600 V UL, - Opt for the best marking visibility thanks to the up-front, flat marker zone, which lets you mark up to eight digits or increase the font size.
Combine high performance with compact dimensions: - 1000 V AC / DC IEC 600 V UL, - Opt for the best marking visibility thanks to the up-front, flat marker zone, which lets you mark up to eight digits or increase the font size.

1SNK705030R0000

Combine high performance with compact dimensions: - 1000 V AC / DC IEC 600 V UL, - Opt for the best marking visibility thanks to the up-front, flat marker zone, which lets you mark up to eight digits or increase the font size.

How to Install NSI Copper Compression Connectors

Install and crimp NSI copper compression lugs or splices on compatible copper conductors. This guide covers conductor preparation, connector selection, and proper crimping for a secure electrical connection.

Tools needed:

Wire brush, Approved compression crimp tool, Approved dies for the selected connector and conductor size, NSI M-250 crimp tool for 250 MCM Class B & C copper cable, NSI M-500 crimp tool for 500 MCM Class B & C copper cable, NSI N12ID dieless crimp tool, NSI N1240 tool

Supplies needed:

NSI copper compression lug or splice connector sized for the conductor, Copper conductor cable

  1. Select the correct connector

    Choose an NSI copper compression lug or splice that matches the conductor size and application. Verify that the connector series and barrel type are compatible with the cable size before starting.

  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 fill it completely.

  3. Clean the stripped conductor

    Wire brush the stripped portion of the conductor to remove oxide films and contamination. Make sure the conductor is clean before insertion to support a reliable electrical connection.

  4. Insert the conductor fully

    Insert the cleaned conductor completely into the connector barrel. Confirm that the stripped portion is fully seated and fills the barrel before crimping.

  5. Crimp the connector

    Use an approved compression crimp tool and the correct die set for the connector series and conductor size. Follow the barrel markings for suggested crimp locations, and make the required number of crimps; long-barrel lugs and splices require twice as many crimps as indicated in the parenthesis.

  6. Verify the finished connection

    Inspect the crimped connector to confirm it is secure and properly formed. Ensure the conductor remains fully seated and that the connection is suitable for the intended copper conductor type, including concentric, compressed, or compact copper conductors.

Frequently Asked Questions about NSI Industries

How are Tork products typically installed?

Tork products are typically installed by trained technicians who follow a comprehensive commissioning process. This includes verifying the work environment, conducting electrical installation checks, performing internal and external equipment inspections, powering on the system, and executing operational tests to ensure compatibility and reliability.

What environmental ratings do Tork products have?

Tork products are designed to meet various environmental ratings, including NEMA Type 4X and Type 6, which provide protection against corrosion, windblown dust, rain, and occasional temporary submersion. These ratings ensure that Tork products can withstand harsh industrial environments while maintaining operational integrity.

What communication protocols do Tork products support?

Tork products support a comprehensive range of communication protocols, including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols facilitate flexible network integration and high-performance communication across various industrial automation systems.

What are the key features of Tork products?

Tork products are designed with advanced features that enhance efficiency and reliability in industrial applications. Key features include integrated harmonics and EMC design for improved power quality, removable terminals for quick installation, and USB ports for easy troubleshooting. Additionally, Tork solutions emphasize user-friendly setup with application wizards and memory modules for convenient parameter management.

What are the main product lines offered by Tork?

Tork offers a diverse range of products primarily focused on industrial automation, including TORK® Photocontrols, lighting controls, and various electrical components such as enclosures, occupancy sensors, and grounding solutions. These products are designed to enhance efficiency and reliability in commercial and industrial applications.

What technical support does Tork offer?

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.

What industries and applications are Tork products used for?

Tork products are utilized across a variety of industries, including food processing, healthcare, hospitality, and manufacturing. They are designed for applications such as hand hygiene, surface cleaning, and dispensing solutions, ensuring efficiency and compliance in environments that require high standards of cleanliness and safety.

What certifications and standards do Tork products comply with?

Tork products comply with UL and cUL certifications, ensuring they meet rigorous safety and performance standards. Additionally, many models are designed to meet NEMA enclosure ratings, providing protection against environmental factors.

How are Remke products typically installed?

Remke products are typically installed through a systematic process that includes site audits to verify proper wiring, followed by remote or on-site commissioning. This commissioning involves installation verification, programming, and communication testing to ensure the system operates reliably and meets design specifications.

What accessories are available for Remke products?

Remke offers a wide range of accessories for their products, including panel mounting kits, fuse holders for voltage inputs, ferrites for communication modules, and current transformers. These accessories enhance the functionality and protection of Remke's industrial automation solutions, ensuring reliable performance in various applications.