I have a Main service I am replacing in California, I want to use QO breakers so I will have to have a made up configuration, only used all-in-ones in the past. So the meter socket, then nipple into hub on top of 3r main panel, but do I need a bonding bushing and a egc. from neutral connection in meter socket to panel or just the three service conductors, neutral bonding to center clamp or buss.? It's just a SFD 125amp service. 817 sq. ft home.