PSI Journeyman Online Practice Exam

Which wire color is typically used for a ground wire in residential wiring?

Blue Green or bare copper Red White

Correct Answer:

Green or bare copper

Explanation:

In residential wiring, the wire color typically used for a ground wire is green or bare copper. Ground wires are an essential safety feature in electrical systems, providing a path for electrical current to safely return to the ground in the event of a fault or malfunction. This helps prevent electric shocks and fires. The use of green insulation or bare copper for ground wires is standardized in the National Electrical Code (NEC), making it easily recognizable. This standardization ensures that electrical installations are safe and reduce the risk of confusion SAMPLEwhen working with wiring systems. Being accustomed to these color codes is crucial for anyone working in electrical trades, ensuring safety and compliance with regulations.

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