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I don't see how such a product would be useful for anyone. At least in USA, anywhere a 25A circuit is available, a 15A circuit is also available. The converse (

• toast0 6y ago
  Looking at us (NEMA) plugs, there's plugs for 15A, 20A, 30A, and 50A. I'm going to assume everyone means 30A instead of 25A. Generally, where there's a 30A circuit, a 15A circuit is also available, but there are exceptions. You may have wired a RV hookup with only a 30A receptacle, but you want to run some lights, or tools or ? with a 15A plug from that on a temporary basis. The circuit is (presumably) good for 30A, so adapting to a lower amp receptacle is reasonable --- it won't hurt anything to draw fewer amps through the circuit. Adapting from a 15A socket to a 30A socket can be dangerous; the 15A or 20A[1] breaker or fuse on the circuit won't immediately open with a 30A draw, and the wiring will heat up during the time it takes for the circuit protection to open; possibly long enough to cause a fire. Of course, just because a load has a 30A plug doesn't mean it draws 30A all the time, there are conditions where using such an adapter is safe, but it requires knowledge of the load. [1] US NEC code allows for a 20A breaker on circuits served by 15A receptacle, as long as there is more than one receptacle
  • mikepurvis 6y ago
    If the 15A device fails short, it's going to get a much bigger load between failure and the breaker tripping on a 30A breaker than a 15A one.