Building a kitchen island for the wife. It will roll out from under another cabinet. So the wife doesn't have to run extension cords all over the place I'm putting a 14 gauge extension that plugs into a 20 amp service outlet. However, the 14 gauge wire is going to be rated for 15 amps. Hence, I wonder if I can use that little circuit breaker as protection for the 14 gauge wire going to the island (which will have a duplex outlet [120 VAC]). It's not intended to be an ON / OFF switch, it's there for protection. Also wondering if the outlet is a GFCI, would that cause unforeseen issues.