Power Poles are not 'male-female' but will mate with each other, so all you need is the correct length cable with Power Poles on each end.
The contacts come in 15, 30 and 45 Amp sizes to fit the appropriate gauge cable, but the plastic housings for all 3 current levels is the SAME, so they will all mate with each other. From what you describe, you will need an extension cord, which will have a red/black pair of PP connectors on each end, and it will mate with the PP connectors on the short cable and on the power supply.
Cables can be made, or purchased from various suppliers. Some favorites are DX Engineering, PowerWerx, West Mountain Radio, Valley Enterprises, and more.