What do the numbers with the "P" represent on the NEMA chart?

The numbers with the "P" on the NEMA (National Electrical Manufacturers Association) chart specifically denote the types of cord caps or plugs. This classification system is essential for understanding the compatibility and safety of electrical connections in various equipment, particularly in the commercial food service industry.

Each "P" designation corresponds to different standards for plug configurations, which are designed to ensure that appliances are connected safely and effectively to power sources. The plug types are categorized by their design, number of pins, and other attributes, which are crucial for matching with the correct receptacle types.

This differentiation helps technicians select the right plug for the equipment they are servicing, ensuring proper electrical connections that meet safety standards and operational requirements.