I built a pole building to house the Magnitude last fall / winter and I wired it myself. I used this box. It is 30A even though my coach is 50A. I don't plan on running both A/C units when it is parked so this suited my purpose.
https://www.connecticut-electric.com...-cesmpsc41grhr
I installed this one on the outside of my garage when I had my last coach and it has worked fine the past couple year. I still use it when I have the Magnitude parked in the drive way and getting ready for the trip. Another reason I installed the previous one in the pole building for the Magnitude is because I had the 30A to 50A adapter and was using it before it got built.
https://www.homedepot.com/p/Midwest-...-100188200-_-N
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