Wireman Lead Practice Exam 2025 – Complete All-in-One Guide to Exam Success!

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In electrical systems, what is the function of the "green" wire?

It indicates the positive terminal

It is used as a grounding conductor

In electrical systems, the green wire is designated as the grounding conductor. Its primary function is to provide a safe path for electrical current to return to the ground in the event of a fault or short circuit. Grounding is crucial for the safety of electrical installations, as it helps to prevent electric shock and protects equipment from damage caused by electrical surges or faults.

The grounding conductor also plays a significant role in ensuring that exposed metal parts of electrical devices do not become energized. If a fault occurs, the grounding wire will carry the excess current safely to the ground, thereby minimizing the risk of damage or injury.

Understanding the purpose of the green wire in electrical systems is fundamental for maintaining safe practices and ensuring compliance with electrical codes and standards.

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It carries the neutral current

It serves as a power supply line

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