hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
I have 225kVA 480/277V to 208/120V transformer with phase conductor of 2 sets of 350kcmil. The transformer is grounded. As I understand it the ground conductor would be sized based on Table 250.102(C)(1) since these are transformer secondary conductors. Would the size of the ground be sized based on each conduit #350kcmil which equals to #2 ground for each conduit or sized based on 2x350 = 700kcmil which equals 2/0AWG for entire system?