Universal Pattern Guide for AC Power Plugs/Sockets
Electrical plugs and their sockets differ by country in shape, size, and type of connectors.
AC Works [ASL1630R] NEMA L16-30R 3-Phase 30A 480V 4-Prong Locking Female Connector with UL, C-UL Approval (Black)
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SatelliteSale 18AWG 2-Prong to Square/Round Connector AC Universal Replacement Power Cable PVC Black Cord (6 Feet)
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AC power plugs and sockets - Wikipedia
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Electrical Plug Manufacturers