A 4-wire, 240V cable assembly typically consists of how many hot conductors?

• A. Five
• B. Two
• C. Three
• D. One

Answer: (B)

In a 4-wire, 240V cable assembly, there are typically two hot conductors. This configuration is designed to handle a 240-volt circuit, which is commonly used for high-power appliances like dryers and ovens. Each of the hot conductors carries the full 120V voltage from the electrical panel, and when combined, they provide the required 240V by being out of phase with each other.

The additional two wires in a 4-wire assembly usually include a neutral wire and a ground wire. The neutral wire is not used in a traditional sense for 240V operations, but it's there for situations where a single-phase 120V load might be connected. The ground wire is for safety, providing a path for electricity to return to the ground in case of a fault, protecting against electrical shock or fire hazards.

Having this configuration allows for balanced loads and adds safety to the electrical system, making it a standard practice in installations where 240V power is required.