I guess I don't understand why someone would reuse a power cord off of a tool that is probably only 6 feet long. Now if your making your own power cord so that it is longer, agreed use 12 gauge wire or use a 15 amp plug if said cord is only 14 gauge.The size of the cord absolutely does matter. The sizing guides exist for a reason. What if some day that cord is removed, and someone reuses it? Just because it will work doesn't mean it should be done. Buy a 15 amp plug( which will work in a 20 amp outlet, and be done with it.