Conntek 30123  L5-20P to 5-15/20R Plug Adapter Plug: NEMA L5-20P Receptacle: NEMA 5-15/20R (T-Blade Style) Max Power: 2,500 Watts This locking adapter converts the L5-20 outlet commonly found on generators and allows a device using a household 15 or 20A plug to receive power