In a properly functioning air conditioner outdoor unit, current should flow through both the live (also known as "hot") and neutral wires. This is because the air conditioner operates on alternating current (AC) electricity, and both the live and neutral conductors are essential for completing the electrical circuit.
Here's how it works:
AC Electricity: The power supplied to residential and commercial buildings is typically AC electricity. AC power constantly alternates between positive and negative cycles, creating a flow of current that changes direction periodically.
Live Wire: The live wire carries the alternating current from the power source (e.g., the electrical panel) to the air conditioner's outdoor unit. It alternates between positive and negative cycles, delivering the necessary electrical energy to power the unit.
Neutral Wire: The neutral wire completes the electrical circuit by providing a return path for the alternating current to flow back to the power source. It carries the current away from the air conditioner outdoor unit, allowing it to complete the electrical loop.
Ground Wire: In addition to the live and neutral wires, there is also a ground wire in the electrical circuit. The ground wire serves as a safety feature to protect against electrical faults and short circuits. If there is a malfunction that causes excess current to flow to the ground, the ground wire directs it safely into the earth, preventing electrical shocks and potential damage to the air conditioner and other electrical appliances.
In summary, both the live and neutral wires are necessary for the proper functioning of an air conditioner outdoor unit, as they allow the alternating current to flow in a complete circuit, providing the electrical power required for the unit's operation. It's important to emphasize that electrical work and troubleshooting should only be performed by qualified professionals to ensure safety and prevent accidents.