MC4 connectors are the industry standard. They are designed for 10 AWG stranded UL4703 wire. The MC4 connectors are rated at 30 amps and have weather protection in the form of rubber seals in the endcaps and an O-ring on the main insertion plug. They have their own latching mechanism so they will not unplug on their own such as in wind or from the pressure of snow and ice. They are hard to beat.
This video shows a careful way for the Do it Yourselfer to use them.
Post time: Jan-26-2017