This cord measures 4 feet long and has a NEMA 14-30P molded male receptacle on one end and pre-stripped conductors on the other end. This is the correct feed cable if you need to feed 120/240 volt, 30 amp to your control panel. Note that this is four wires, L1 Hot, L2 Hot, Neutral, Ground. It will plug into a NEMA 14-30R receptacle which is a modern (post 1997) electric dryer outlet for example. This cord assembly is more economical than building your own from separate home center parts.