In a standard 120-volt outlet, which slot is the smaller one?

In a standard 120-volt outlet, the smaller slot is associated with the ungrounded conductor, which is typically referred to as the "hot" slot. This configuration is designed to ensure appliances and devices are connected properly, as the larger slot corresponds to the grounded conductor, or "neutral."

The ungrounded conductor carries electricity to the appliance, while the grounded conductor provides a return path and is connected to the earth ground. The differentiation in size serves to help users easily identify which plug should go where and prevents incorrect connections that could lead to electrical hazards. The grounding conductor is not utilized in the standard two-slot configuration, as it serves a different purpose – providing an additional safety path for electricity in a three-slot outlet setting.

The bonding conductor has a different role outside of the context of standard outlets, further emphasizing why the ungrounded conductor is the correct choice when identifying the smaller slot.