Hellow guys, Welcome to my website, and you are watching WHY 3 PHASE SUPPLY IS 440V, NOT 660V! 3 PHASE SUPPLY VOLTAGE IS 440V. and this vIdeo is uploaded by SN TECHNICAL at 2020-02-18T17:00:02-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.