Why aren't there any 3-phase domestic power-outlets, or any interest in 3- phase for household (mains) power or anything relatively low-power? - Electrical Engineering Stack Exchange
File:Australian 3-phase socket 32A vs 50A comparison.jpg - Wikipedia
Industrial and multiphase power plugs and sockets - Wikipedia
Legrand® Pass & Seymour 60-Amp 3-Phase 4-Wire Black Flush Power Outlet at Menards®
Industrial and multiphase power plugs and sockets - Wikipedia
Museum of Plugs and Sockets: North American heavy duty plugs and sockets
3 Phase Plugs and Sockets Explained | Floorex Products
IEC 60309 (6H) 3 PHASE OUTLET, WATERTIGHT (IP67) UNIVERSAL OUTLET, 60 AMPERE-400 VOLT UL/CSA, 63 AMPERE-400 VOLT INTERNATIONAL / EUROPEAN, 4 POLE-5 WIRE GROUNDING
Industrial and multiphase power plugs and sockets - Wikipedia
IEC 60309 (6H) 3 PHASE OUTLET, WATERTIGHT (IP67) UNIVERSAL OUTLET, 60 AMPERE-400 VOLT UL/CSA, 63 AMPERE-400 VOLT INTERNATIONAL / EUROPEAN, 4 POLE-5 WIRE GROUNDING
3 Phase Plug, 4 Pin Power Plug 3 Phase Waterproof Concealed Mount Socket Connector Set Industrial Plug Connector 380V-415V 16A 3P+E Electrical Connector - Amazon.com
10 HOW TO Connect the three phases CEE plug - YouTube