from the ct cabinet to the ist main the Neutral is your bond,
also install a bonding strap or jumper from XO in CT cabinet to cabinet. (Usually supplied by manufacturer of Cabinet.
If not size a conductor using 250.66

Installing EGC would give you a parallel neutral as your also required to bond in MDP.

See Soares grounding book or goggle Soares info on net

http://iaeimagazine.org/magazine/1998/11/01/service-main-bonding-jumpers/

Last edited by Yoopersup; 06/26/16 02:51 PM.