What does a triplex wire consist of?

A triplex wire is designed specifically for overhead power distribution and consists of two insulated conductors and a neutral wire. The two insulated conductors carry the current, while the neutral wire provides a return path for the unbalanced load. This configuration is common in residential and small commercial applications because it allows for efficient transmission of electrical power over distances while providing a safe return path for electricity.

The design of triplex wire, with its three components, provides necessary support and stability due to its construction. Typically, the conductors are arranged in a way that helps manage the physical stresses they encounter during installation and operation. This arrangement also minimizes the electromagnetic interference that can occur in power lines, promoting efficiency and safety.

In this context, the other answer choices do not accurately reflect the composition of triplex wire or are incomplete. A single insulated conductor and a ground wire do not meet the needs for balanced power delivery seen in typical distribution scenarios. Similarly, configurations that suggest only neutral wires, or combinations with ground wires, lack the essential conductors required for effective current transmission. Understanding the correct makeup of triplex wire is crucial for those working in electrical utility and installation to ensure reliable and safe electric service.