Ideal Industries Underground S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$76.74
$25.35
IDEAL Industries 46-401 Thermo-Shrink® Underground Splice Kit, 8-2 AWG

Ideal Industries Underground Splice Kit 8-2 AWG 600V Thermo-Shrink Direct Burial

(No reviews yet) Write a Review

Model: 46-401
Selected Model is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$76.74
$25.35
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Ideal Industries Thermo-Shrink Underground Splice Kit

Professional-Grade Direct Burial Splice Protection System

The Ideal Industries Thermo-Shrink Underground Splice Kit delivers professional-grade splice protection performance for direct burial electrical applications. This heavy-wall heat shrink system features adhesive-lined tubing designed for electricians, utility professionals, and electrical contractors, providing the reliable underground splice protection and industry-leading quality that electrical professionals demand for 8-2 AWG installations.

Professional Features & Benefits

Advanced Heat Shrink Protection

  • Heavy-Wall Heat Shrink Tubing - Provides complete insulation and environmental protection with superior durability
  • Adhesive Liner Technology - Creates watertight seal preventing moisture infiltration and corrosion
  • UV Resistant Construction - Withstands prolonged sun exposure during installation and above-ground applications
  • Direct Burial Rating - Engineered specifically for underground electrical splice applications

Electrical Safety & Code Compliance

  • 600V Maximum Rating - Meets voltage requirements for residential and commercial electrical systems
  • 105°C Temperature Rating - Handles high-temperature electrical loads safely and reliably
  • NEC 2005 Code 110-14(B) Compliant - Ensures code-compliant installations for electrical inspections

Technical Specifications

Wire Range: 8-2 AWG for copper and aluminum conductors, Voltage Rating: 600V maximum, Temperature Rating: 105°C continuous operation, Construction: Heavy-wall heat shrink tubing with adhesive liner, Environmental: UV resistant and direct burial rated, Code Compliance: Meets NEC 2005 requirements 110-14(B), Application: Underground splice protection for electrical distribution systems.

Installation & Setup

  1. Strip conductors to proper length ensuring clean copper or aluminum surfaces for reliable connection
  2. Position heat shrink tubing over splice area before making electrical connection
  3. Make splice connection using appropriate connector for copper or aluminum conductors
  4. Slide heat shrink tubing over completed splice ensuring complete coverage
  5. Apply heat evenly using heat gun to activate adhesive liner and shrink tubing
  6. Verify complete seal formation and proper insulation coverage before burial

Professional Applications

Ideal for:

  • Underground Electrical Distribution - Direct burial splice protection for residential and commercial power distribution
  • Utility Service Connections - Service entrance and meter base connections requiring underground protection
  • Landscape Lighting Systems - Low voltage and line voltage outdoor lighting splice protection
  • Pool and Spa Electrical - Underground electrical connections for pool equipment and lighting
  • Irrigation System Power - Electrical connections for automated irrigation and sprinkler systems
  • Outdoor Equipment Connections - HVAC units, well pumps, and other outdoor electrical equipment
  • Commercial Site Lighting - Parking lot, security, and architectural lighting electrical connections
  • Industrial Underground Power - Manufacturing facility and warehouse underground electrical distribution

Thermo-Shrink Technology Advantage

Ideal Industries Thermo-Shrink technology provides superior underground splice protection through heavy-wall construction and adhesive liner activation. The heat-activated system creates a watertight seal that prevents moisture infiltration, corrosion, and electrical failures in buried applications, ensuring long-term reliability for critical electrical connections.

Why Choose Ideal Industries Quality?

Ideal Industries commitment to NEC code compliance, UV-resistant materials, and direct burial rating ensures reliable performance for underground electrical applications. The 600V rating and 105°C temperature specification provide safety margins for electrical professionals, while the heavy-wall construction delivers the durability and protection that electrical contractors demand for permanent installations.

Manufacturer Resources

Product Specs

Product Group:
Wiring Devices
Department:
Electrical
Product Subgroup:
Wiring Accessories

Ideal Industries 46-401 – Frequently Asked Questions

1) Will the Ideal 46-401 splice kit work on #6 aluminum direct burial cable?
Yes. The 46-401 Thermo-Shrink underground splice kit covers 8-2 AWG on both copper and aluminum conductors, so #6 aluminum sits in the middle of the range. The kit is the insulation and seal only, so you still supply a connector rated for aluminum for the actual splice.
2) Can this heat shrink splice kit be buried directly in the ground without a box?
That is exactly what the 46-401 is built for. The heavy-wall tubing carries an adhesive liner that melts and flows when heated, forming a watertight seal around the splice so moisture cannot track in and corrode the connection. It is direct burial rated, no junction box or enclosure required for the splice itself.
3) Do I need anything besides the Ideal 46-401 kit to finish an underground splice?
Two things. A connector appropriate to the conductor metal, copper or aluminum, to make the actual electrical joint, and a heat gun to shrink the tubing and activate the adhesive. The kit supplies the heavy-wall adhesive-lined tubing that insulates and seals the finished splice.
4) What is the voltage and temperature rating of the Ideal Thermo-Shrink underground splice kit?
Rated 600V maximum and 105 degrees C continuous. That covers standard branch circuit and feeder work on residential and commercial systems, including well pumps, pool equipment, and site lighting runs. If you are splicing medium voltage or utility primary, this is the wrong kit.
5) Does the Ideal underground splice kit meet NEC requirements for buried splices?
The 46-401 is stated to meet NEC 2005 requirement 110-14(B), which is the section governing splice and joint insulation. That is the compliance point an inspector looks at on a buried connection.
6) How do you install the Ideal Thermo-Shrink splice kit correctly?
Slide the tubing onto one conductor before you make the joint. That is the step people miss, and once the connector is crimped there is no getting the sleeve on. Strip to clean copper or aluminum, make the connection, center the tubing over the whole splice, then heat evenly with a gun until the adhesive flows out at both ends. That bead of adhesive at the ends is your confirmation the seal took. Do not backfill until you see it.
7) Will one 46-401 kit splice a three conductor underground feeder?
The 46-401 covers a single splice. On a multi-conductor run each conductor gets its own individually sealed sleeve, so a three wire feeder plus ground needs one kit per conductor you are joining. Stagger the splices along the cable so the sealed sections do not bunch into one thick bundle.
8) Can I use this splice kit above ground where it sees sun, or is it underground only?
UV resistant construction means the tubing holds up to prolonged sun exposure, so an exposed splice on an HVAC disconnect run or a light pole base is within what the 46-401 is built to handle, not just buried work.
How fast can I get the Ideal Industries 46-401 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 Ideal Industries 46-401 come with a warranty?
Absolutely. The Ideal Industries 46-401 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 Ideal Industries 46-401?
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 Ideal Industries 46-401 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!