This adapter is designed for powering your Paragon kiln or RV on a NEMA 10-30 dryer outlet, commonly found in homes built before 1996. This adapter works on any kiln requiring a neutral connection that has a NEMA 14-50 plug. Great for RVs, too! The green wire simply plugs in to any standard outlet nearby – this is only to provide a ground connection for your safety. Please make sure that you do not exceed 30 amps. Cable length is 18 inches.