Extension cord adapters are lengths of electrical cable used to create compatibility between a device's power cord plug and a power outlet receptacle when they are of different types. These adapters have a plug at one end that connects to the power source and a receptacle at the other end that the device plugs into. They are typically used to supply power to devices in industrial applications, such as power tools and machinery, where a variety of plug types and outlets are common. Limit current to the adapter's lowest rating to help prevent overheating.