What is the color code for a non-metallic sheathed cable’s ground wire?

The ground wire in a non-metallic sheathed cable is typically designated by specific colors to ensure safe and standardized electrical practices. The correct answer is that the ground wire is colored green or is sometimes bare. Green is the universal color for grounding wires and is used to alert electricians and other personnel to its specific function, which is to provide a safe path for fault current, helping to prevent electric shock hazards.

Using a bare wire as a ground is also common because it is easy to identify and doesn't need insulation, as it does not carry current under normal operating conditions. This color coding is important in wiring to ensure that everyone working with electrical systems can easily identify the ground wire, thereby minimizing the risk of electrical accidents.

The other color combinations suggested are not standard for ground wires. For instance, blue or white wires are often associated with other functions, such as hot or neutral, while red or black are generally used for hot wires. Yellow or orange typically signifies special applications and is not used for grounding purposes. Understanding this color coding is vital for safety and compliance with electrical codes.