Conntek 14340 30Amp RV to 15/20Amp Pigtail Adapter Plug: NEMA TT-30P Receptacle: NEMA 5-15/20R (T-Blade Style receptacle allows for much more versatility) Cable: STW 10/3 Max rating when using 15 Amps: 1,875 Watts Max rating when using 20 Amp: 2,500 Watts The length of the product is 12 inches or 1 foot in length.