Includes 30A(L6-30) to 20A(L6-20) plug adapter. The Quick 220 system is a unique solution for converting your standard household electrical service into a 240-volt outlet. Unlike bulky transformers, the Quick 220 utilizes your existing 120-volt circuits to create a powerful 20-amp, 4800-watt output – perfect for powering high-demand appliances like dryers, welders, and electric vehicle chargers. This system boasts safe and easy installation, making it a great choice for DIY enthusiasts and electricians alike.