why line to line voltage is 400v?
T tom66 Joined May 9, 2009 2,595 Mar 22, 2011 #2 Are you talking about 3-phase or about the peak-to-peak voltage of household mains?
SgtWookie Joined Jul 17, 2007 22,230 Mar 22, 2011 #3 If 3-phase, take a look in our E-book, here: http://www.allaboutcircuits.com/vol_2/chpt_10/2.html ~400vac phase to phase would be ~230vac per phase.
If 3-phase, take a look in our E-book, here: http://www.allaboutcircuits.com/vol_2/chpt_10/2.html ~400vac phase to phase would be ~230vac per phase.