Red Seal Construction Electrician Practice Exam

What color is typically used for ground wires in electrical installations?

1. Red

2. Blue

3. Green or bare

4. Black

The correct answer is: Green or bare

The color typically used for ground wires in electrical installations is green or bare. In electrical wiring, specific colors are assigned to different types of conductors to ensure safety and clarity during installations and repairs. Green is universally recognized as the standard color for ground wires, indicating that these wires are used for grounding purposes to prevent electrical shock and ensure proper operation of circuit protection devices. The use of bare wires, which have no insulation, is also common for grounding applications, allowing for easy identification of grounding connections. This standardized color coding helps electricians quickly and accurately identify the function of each wire during installation, maintenance, or troubleshooting, contributing to the safety and reliability of electrical systems.