NSI Industries L838 - 1 Hole Long Barrel Copper Compression Lug 8 AWG - 3/8" 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

L838

UPC: 662381336293

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Overview

NSI Industries L838 1 Hole Long Barrel Copper Compression Lug is a high-performance electrical connector designed for secure, low-resistance terminations in industrial and commercial applications. Engineered from high-conductivity copper tubing and tin-plated for superior corrosion resistance, this lug ensures reliable electrical contact with minimal voltage drop. The long barrel design accommodates 8 AWG wire (8-10 AWG expanded range) and is optimized for a 3/8" bolt size, providing robust mechanical strength and stability in high-current circuits. Key specifications include a UL486A listing for wire connectors and UL467 certification for grounding and bonding, with a maximum voltage rating of 600V and temperature rating of 90°C. The lug is color-coded red for easy identification and marked with a die index for consistent installation. When properly installed per cable manufacturer instructions, it supports applications up to 35KV. For voltages exceeding 2000V, consult the cable manufacturer’s voltage stress relief guidelines to ensure compliance and safety. Ideal for grounding, bonding, and power distribution systems, the L838 is compatible with Class B or C building wire copper cable. Its durable construction and compliance with NEC standards make it a trusted choice for electrical contractors and engineers requiring dependable performance in demanding environments. NSI Industries, a US-based manufacturer, delivers this product with a commitment to quality and reliability.
  • High-conductivity copper tubing for low resistance and efficient current flow
  • Tin-plated for corrosion resistance and low contact resistance
  • UL486A and UL467 listed for wire connectors and grounding/bonding
  • Supports 8 AWG wire (8-10 AWG expanded range) with 3/8" bolt size
  • Temperature rating: 90°C; Voltage rating: 600V; Max 35KV when properly installed

Specifications

Application
Terminate, Splice, Tap Power Connectors
Cable Size
# 8 AWG (STR)
Color
Red
Connection Type
Compression Lug
Environmental Conditions
90 C
Finish
Tin Plated
Material
Copper
Mounting
3/8 Mounting Hole IN
Number Of Holes
1
Size
8 AWG - 3/8" Bolt
Size
L=1.52 - W=.420 - OD=.295 - ID=.205 IN
Special Features
# 8 AWG (STR) - 3/8 Mounting Hole
Standard
UL486A/B, UL467 (8 AWG -3/0 AWG)
Stud Size
3/8 IN
Type
Long Barrel - One Hole
Voltage Rating
35 kV
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
1.52 IN x 0.42 IN x 0.295 IN
Package Dimensions (L x W x H)
3.8608 cm x 10.668 mm x 7.493 mm
Package Weight (Imperial)
2.200 L
Package Weight (Metric)
0.998 kg
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How to Install NSI Copper Compression Connectors

Install and crimp NSI copper compression lugs or splices on compatible copper conductors. Select the correct connector size, prepare the conductor properly, and crimp using the approved tool and die set for a secure connection.

Tools needed:

Wire brush, Approved crimp tool, Approved dies or dieless crimp tool, Mechanical crimp tool (optional: NSI M-250 or NSI M-500 for larger cable sizes)

Supplies needed:

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

  1. Select the correct connector

    Choose an NSI lug or splice connector that matches the conductor size and series requirements. Verify the connector is approved for concentric, compressed, or compact copper conductors before starting.

  2. Strip and clean the conductor

    Carefully strip the insulation to the specified strip length without nicking the strands. Wire brush the stripped conductor to remove oxide films, and make sure the exposed copper is clean before insertion.

  3. Insert the conductor fully

    Push the stripped conductor completely into the connector barrel so it fills the barrel fully. Do not leave exposed strands outside the barrel, and confirm the conductor is seated all the way in.

  4. Crimp the connector

    Crimp the connector using the approved NSI tool and the correct die set for the connector series and wire size. Follow the barrel markings for suggested crimp locations, and apply the required number of crimps; long-barrel lugs and splices require twice as many crimps as indicated.

  5. Verify the finished connection

    Inspect the crimped connector to confirm it is secure, properly aligned, and fully compressed. For larger cable sizes, use the specified mechanical crimp tool if required, and ensure the final connection meets the connector and tool instructions.

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