What voltage is typically found in a neutral wire?

The neutral wire in an electrical system is intended to carry current back to the source and serves as a reference point in the circuit. Typically, the voltage in a neutral wire is at ground potential, which is defined as 0 volts. This allows the neutral wire to provide a safe pathway for returned current and helps maintain the overall stability of the electrical system.

In systems where some voltage is present between the live and neutral wires, the neutral effectively allows the current to complete its circuit safely. It is important for the neutral to be kept at or very close to 0 volts to ensure safety and proper operation of electrical devices connected to the system. Any significant voltage on the neutral wire can indicate a fault or imbalance, which could pose hazards such as electric shock or fire.

The other voltages listed, such as 120 volts or 240 volts, are typically the voltages found in live wires in specific regions or applications, while 12 volts is common in low-voltage applications like automotive or battery-powered devices. Hence, the neutral wire's normal state of 0 volts is crucial for safe and effective electrical system operation.