Comment: Re:Easy (Score 1) 234
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2. A distribution system designed to code is already sufficiently protecting the wiring from overload. The only reason to use larger wire is to keep voltage drops in check on longer runs. Otherwise, oversized wire is completely pointless, it doesn't protect you from anything.
It not even that complicated, the gauge of wire that you use is based on your breaker. The max amps on the wire package is all you really need, 14 gauge for a 15 amps breaker, 12 gauge for 20 amps, 10 gauge for 30 amps, 8 gauge for 40 amps...