CSLB Class B General Contractor's License Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

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.

Practice this question and more.

What does the green electrical wire signify?

Power supply
Neutral ground
Ground
Hot wire

The correct answer is: Ground

The green electrical wire signifies ground. Ground wires are essential for safety in electrical systems; they provide a path for excess current to flow safely to the earth in case of a fault. This helps prevent electrical shocks and ensures that equipment is protected from surges or faults. Grounding is a critical safety feature in all electrical systems, and the use of a green wire is standardized in electrical wiring practices, making it easily recognizable for identification. The other options represent different functions in electrical wiring: the power supply typically relates to live or hot wires, which are responsible for delivering current; neutral wires carry current away from the electrical appliance; and hot wires also deliver power to devices but are typically insulated in colors like black or red. Understanding the distinct roles these wires play helps ensure proper installation and maintenance of electrical systems.