Mike01 Senior Member Location MidWest Aug 26, 2009 #1 In a transformer (low voltage dry type) is the XO also the ground bus where you tie you ground to (ex. Bldg steel) or is there another ground bus for this if so this ground assembly and the XO would be tied together correct?
In a transformer (low voltage dry type) is the XO also the ground bus where you tie you ground to (ex. Bldg steel) or is there another ground bus for this if so this ground assembly and the XO would be tied together correct?
raider1 Senior Member Staff member Location Logan, Utah Aug 26, 2009 #2 Take a look at 250.30(A)(3). Chris