Wye or Star vs the Delta Electrical System


Senior Member
Of course the RMS voltage is probably (since it was posted by someone from Europe) probably near 415 volts - this just based on relatively simple observation of the graph and not doing any absolute calculations.
It's actually 400Vac which is the nominal 3-phase supply in EU land these days.
It's an image I had in my on-line storage so I just used that rather than going back to the spreadsheet where I generated. I thought it served the purpose.