Any electricians available? Wire size question...

I had to run a new underground service to my house. I bought it from my electrical supplier. won`t hurt to go a little oversize, but might make it harder to hook up. you don`t need any convertors for 110. take it off one side of the 220 . A bout 40 yrs ago, I took the power for the outlets off one side, and the power for the lights off the other side of my 220, in my garage. w/ a 50amp breaker, I can weld , run my lathe , or mig welder w/ the lights on, no problem.
Yes, famousbob, you can do it that way but it creates a shock hazard not to use the neutral wire in addition to the ground wire on 110 service. You've got to take each leg of the 110 paired with the neutral, not with the ground, in order to meet the code.