How should receptacles be wired to ensure proper polarity?

To ensure proper polarity in receptacle wiring, it is essential to recognize the designated function of each slot in a standard receptacle. The longer slot is designed to be the neutral connection, while the shorter slot is intended for the hot connection. This configuration is crucial for the safe and effective operation of electrical devices.

When wired correctly, the hot wire connects to the shorter slot, and the neutral wire connects to the longer slot. This arrangement ensures that the electric current flows correctly through devices, helping to prevent electrical shocks and ensuring safe operation. Proper polarity allows for the proper functioning of polarized plugs, which are designed to fit only one way into a receptacle, further enhancing safety by ensuring that current flows in a direction that minimizes the risk of shock.

Understanding this wiring method is critical for any electrical installation or repair, as it directly impacts the functionality and safety of electrical systems.