CSLB Class B General Contractor's License Practice Exam

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Prepare for the CSLB Class B General Contractor's License Test with interactive flashcards and multiple choice questions. Each question offers hints and explanations to enhance your understanding and readiness for the exam.

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What is the function of the white electrical wire?

Ground wire
Live wire
Neutral wire
Switch wire

The correct answer is: Neutral wire

The white electrical wire serves as the neutral wire in most wiring systems. Its primary function is to carry current away from the load back to the electrical panel, completing the circuit. This is essential for maintaining a balanced electrical system and ensuring safety, as it prevents excess electrical current from building up. In typical wiring configurations, the neutral wire is connected to the ground at the main electrical panel, which helps to stabilize voltage levels and provides a path for faults, thus improving the overall safety of the electrical system. The designation of the white wire as neutral is standardized in electrical wiring codes to promote safety and consistency in installations. Understanding the role of the neutral wire is crucial for anyone in the electrical field, as it plays a vital role in the operation and safety of electrical systems.