Re: Shared Neutral question
You are talking about wiring 220 with neutral using 2 120v breakers then spliting it into two seperate 120v circuits with only one neutral. First this would not be to code and could be dangerous because of feedback between the two circuits. Second, if it were allowed, the toatal breaker value would have to limited to 20 amps on 12 ga. wire which would mean you would need to use 2 10amp breakers of a 15 amp and a 5 amp breaker. That's because the neutral wire carries the same current as the hot wire or wires. This type of hook-up is a good way to get someone killed. Please do not do it.
Be sure you live your life, because you are a long time dead.-Scottish Proverb