Hey Hedges. I'm sure this isn't the place to refer to another post but here I go.
AlaskanNoob has a post in off grid living advice. Because I hate to ask what others are already discussing, I'm watching it and other posts. I'm eventually going to do similar but with shorter underground cable runs. I have our main cabin ready to go this spring, and have framed up 2 smaller cabins, I want to electrify down the road. I think these connectors will be of interest to him as well. I've read a lot of what you wrote on various threads. I think he could use some of your wisdom as well.