The NEMA Configuration Guide is a free utility and tool app available on iPhone. Developed by Summit Electric Supply Co. Inc., this app is perfect for electricians and electrical professionals who need to quickly identify unknown NEMA receptacle and plug configurations.

With over 240 NEMA configurations at your fingertips, this app allows you to easily find the configuration you need. Simply plug in the information you know, such as voltage, amperage, or poles, and view all matching results. The app also offers a plug/receptacles cross-reference option for quick matching.

Features of the NEMA Configuration Guide include the ability to filter configurations by specifications like amperage, voltage rating, phase, wires, poles, and grounding. You can also compare configurations by image and view detailed specifications for each configuration. The app also provides circuit wiring diagrams for reference.

Overall, the NEMA Configuration Guide is a valuable tool for electricians and electrical professionals in the field or at a jobsite. It simplifies the process of identifying unknown NEMA configurations, saving time and effort.