Can Underground Wire Be Spliced?

Underground wire is commonly used for various electrical applications, such as outdoor lighting, irrigation systems, and underground electrical circuits. Over time, these wires may experience damage or require modifications, leading to the need for splicing. Splicing underground wire allows for repair, extension, or connection of wires while maintaining the integrity and safety of the electrical system. In this article, we will explore the process of splicing underground wire and the different splice kits available for this purpose.

Types of Splice Kits for Underground Wire

When it comes to splicing underground wire, there are two common types of splice kits: heat-shrinkable tubing kits and gel-filled shield kits. These kits are specifically designed for underground applications and provide insulation, protection, and waterproofing for the splices.

1. Heat-Shrinkable Tubing Kits

Heat-shrinkable tubing kits utilize a heat source to shrink the tubing around the splice, creating a secure and insulated connection. The process involves the following steps:

1. Prepare the wires: Strip the insulation from the ends of the wires that need to be spliced.
2. Connect the wires: Place the stripped ends of the wires into a brass splicing block included in the kit. Ensure that the wires are properly aligned and make a solid connection.
3. Apply heat: Use a heat gun or torch to heat the heat-shrinkable tubing. The heat causes the tubing to shrink tightly around the splice, providing insulation and protection.

2. Gel-Filled Shield Kits

Gel-filled shield kits use a silicone sealer that seals the splice connections after they are complete. This sealer provides waterproofing and protection against moisture. The process for using gel-filled shield kits typically involves the following steps:

1. Prepare the wires: Strip the insulation from the ends of the wires to be spliced.
2. Connect the wires: Insert the stripped ends of the wires into a brass splicing block included in the kit. Ensure a secure and proper connection.
3. Apply the sealer: Apply the silicone sealer provided in the kit to the spliced wires. The sealer fills the gaps and creates a waterproof barrier around the splice.

Choosing the Correct Splice Kit

When splicing underground wire, it is crucial to choose the correct size of splice kit for the wire being spliced. The size of the splice kit should match the wire gauge and insulation thickness to ensure a proper fit and reliable connection. It is recommended to consult the manufacturer’s instructions or seek professional advice to determine the appropriate splice kit for your specific application.

Sources

• Family Handyman: https://www.familyhandyman.com/project/fix-underground-wiring/
• Home Improvement Stack Exchange: https://diy.stackexchange.com/questions/170102/how-can-i-repair-a-buried-120v-cable-splice-to-make-it-meet-code
• eHow: https://www.ehow.com/how_7514014_splice-underground-electrical-cable.html

FAQs

Why would I need to splice underground wire?

Splicing underground wire may be necessary for various reasons, such as repairing damaged sections, extending wires to reach a new location, or connecting multiple wires together.

Is it safe to splice underground wire?

Yes, it can be safe to splice underground wire if the proper techniques and materials are used. The use of specific splice kits designed for underground applications helps ensure the integrity and safety of the electrical system.

What are the types of splice kits available for underground wire?

The two common types of splice kits for underground wire are heat-shrinkable tubing kits and gel-filled shield kits. These kits provide insulation, protection, and waterproofing for the splices.

How does a heat-shrinkable tubing kit work?

Heat-shrinkable tubing kits involve using a heat source to shrink the tubing around the splice. This process provides insulation and protection by creating a secure connection.

How does a gel-filled shield kit work?

Gel-filled shield kits utilize a silicone sealer that seals the splice connections after they are complete. This sealer provides waterproofing and protection against moisture.

What is the purpose of a brass splicing block in the splice kits?

Brass splicing blocks are included in the splice kits to connect the wires securely. They ensure a solid and reliable connection between the spliced wires.

How do I choose the correct splice kit for my underground wire?

Selecting the appropriate splice kit involves considering the wire gauge and insulation thickness. It is important to match the size of the splice kit to the wire being spliced for a proper fit and reliable connection.

Can I perform underground wire splicing myself, or should I hire a professional?

While it is possible to perform underground wire splicing as a DIY project, it is recommended to consult the manufacturer’s instructions or seek professional advice, especially if you are unfamiliar with electrical work. Hiring a licensed electrician ensures the job is done correctly and meets all relevant codes and regulations.