NEMA 2 Port 5-15P 120V 15 Amp 3 Prong Plug Male to 14-50R 120V / 240V 30Amp 4 Prong Receptacle Female Y Combiner STW 3 Feet Generator Power Cord Adapter - Copgge, TUT08940901A

• 5-15P Male: NEMA 2 Port 3-prong 5-15 plug male for 120V, two of 12AWG 5-15P, max 15Amp for each. 14-50R Female: NEMA 14-50 Receptacle 4 Prong female for 120V / 240V, 10AWG, max 30Amp. How it Work: Each 120 volt plug has ground, neutral, and line wires. Ground on each 120V plug is interconnected to each other and to 14-50, as are the neutral wires. Each “line” coming from the 120V plugs goes to alternate power pins (called “X” and “Y”, and the ones side by side) on the female 14-50R. Note: Please make sure you plug this into NOT ONLY two different circuits, but also TWO DIFFERENT phases. Please note that this adapter cord will not operate when plugged into a GFCI or a GFI type outlets. It can NOT work if you do not plugin both of plug. (Must plugin both of two plugs). Function: Hook the 15 amp plugs to two different outlets on separate circuits to provide 30 amps to your RV. Allows two AC units to run when loading or working in the RV. It is not working for EV., Manufacturer: Copgge