How do copper terminal lugs work? from Axis Electrical's blog

What keeps the terminals of a cable firmly joined with the electrical system? What happens when the wires are tense but do not detach from the wiring terminals? The cable terminals come into the picture. These elements are designed according to the requirements of the electrical components.

What are copper terminal lugs?

In this aspect, copper is the prime element chosen for its conduction and durability. The terminal lugs made of copper and sometimes with copper and aluminium are called copper terminal lugs. These lugs are designed so that the terminal of a cable can fit into them quickly and give the professionals an extra edge to create a vital junction. Let us talk about a copper terminal lug's design and work functions.

A copper terminal lug design has a barrel and a palm. The barrel is hollow, and its specifications are based on the standard copper cables used in the industry. A copper lug is designed so that the barrel can perfectly fit the cable inside to avoid electrical accidents.

The other part of a copper lug is the palm. It is the extended part of the barrel where a connection gets created with the junction of an electrical system. The barrel will fit the cable terminal inside, and the palm will get fixed11111 with an electrical board with a screw.

The design of a copper lug is made so that the barrel is either crimped or welded to properly hold the wire terminal inside without leaving a gap. This technology creates a strong connection between the copper cable terminal and the junction point of an electrical system.

How does a copper terminal lug work?

If we focus on the copper lug design, we can clearly understand how it creates a solid terminal junction. The wire terminal is introduced in the barrel and crimped or welded. Once welded, the palm part of a copper terminal lug is screwed to the board of an electrical system to create a strong connection.

It is made sure that there is no gap between the cable terminal and the barrel. Hence, specific copper terminal lugs are chosen based on the cable diameter. The lumen size of the barrel must match the cable diameter, and so should the palm dimensions with the junction with the electrical system.

Final words

Copper is the prime choice of the electrical industry to ensure the best connection between cable terminals and junctions of a board. Hence, copper terminals are chosen for such purposes.

A copper terminal lug creates a strong connection between a cable terminal and an electrical system of a residential or commercial premise. The specifications are matched well before installation to ensure the best and most durable connection.