NEMA Plug Configuration Chart: A Guide to North American Electrical Connectors

A NEMA plug configuration chart provides a visual reference for the standardized plugs and receptacles used across North America. Developed by the National Electrical Manufacturers Association (NEMA), this chart helps users quickly identify the correct plug type based on voltage, amperage, and pin arrangement.

This chart is indispensable for electricians, engineers, and EV owners to ensure safe, compatible power connections. Always verify your equipment’s requirements before use.

Key Features of the Chart:
✔ Clear Visual Diagrams – Shows blade shapes, grounding pins, and orientation for each NEMA type
✔ Voltage & Current Ratings – Labels 120V, 208V, 240V, and 480V configurations
✔ Locking & Non-Locking Variants – Differentiates standard (NEMA 5-15) and twist-lock (L5-15) designs
✔ Common Applications – Matches plug types to uses (e.g., NEMA 14-50 for EV charging, NEMA L6-30 for industrial equipment)

Example Chart Included Below:
(Note: Actual chart would display common NEMA types like 5-15, 6-20, 14-50, L5-30, etc., with voltage/amperage specs and typical applications.)

Why It Matters: Mis-matching plugs can damage equipment or create safety hazards. This chart eliminates guesswork for proper electrical connections.