Use this adapter between a 20-Amp locking shore power pedestal and your boat's 30 shore power inlet.Ergonomic EEL-style adapters allow you to connect from one dockside receptacle (or other power source receptacle) to one boatside inlet (or equipment) of dissimilar power configuration.EEL ShorePower-Style Straight Adapters are high-quality, one-piece adapters used much like Pigtail Adapters. However, they do not have sealing collars and are not recommended for use in wet locations. Use only in an enclosed, dry location, such as powering your boat from a 15A power receptacle inside your house.Key FeaturesDock side: 20-amp, 120V male locking plug that attaches to the dockside receptacleBoat side: 30 amp female locking connectorErgonomic design for easier grippingPower-on LED confirms connectionIntegral fittings with no wire between the end fittings for a more secure, low-resistance connectionAll components are covered by Marincos five-year warrantyMarine UL Listed