Final answer:
In the United States, the standard color for the neutral wire in 110V/120V AC wiring is white, and it is mandated by the wiring color code to be used for the connection that is at zero volts, providing a safe return path for current.
Step-by-step explanation:
When wiring 110V/120V AC power in the United States, the standard accepted color for the neutral wire is white. This coloring standard helps electricians and individuals identify the purpose of each wire in a three-wire system. It's important to note that while the neutral wire is color-coded and is usually safe to touch, live/hot wires can be of different colors, like black or red, and the ground wire is typically green or bare. Figure 23.30 illustrates that the neutral wire connects to the earth at multiple points, ensuring it is at zero volts and provides a return path for electric current. Local standards may vary, so it's crucial to check the wiring regulations specific to your region to ensure safety and compliance.