Okay, I have my main breaker panel on the inside of an outside wall in my attached garage. I need to run 3 #10 conductors and 2 #14 conductors through a knockout in the back wall of the box, through the outside wall, and directly into a knockout on the back wall of a meter box installed outside. What is the right way to do this. I was planning to run the individual conductors through the wall, but is that to code? If I were to leave the conductors sheathed in cable, would that be an option? If so would I need to secure the cable in some way. Thanks for any advice. I'm located in Minnesota, USA.

Hi, Long story short; I live in an apt that is one house that got turned into two apts with another apt on the lot that I guess was a detached garage. The garage apt has its own breaker box and water heater, mine does not. The question here is what would the owner need to do to put in a breaker box for my unit? Also what is needed to put in different meters for each apt? thanks