I did a similar shore power mod with off-the-shelf parts from Home Depot, but downsized to 20 Amps as I don't have factory air or microwave
. The standard 60 foot extension cord I now carry is lighter weight
than the factory cable since its 12 gauge and somewhat less armored than the shorter factory cable. One bonus is that its much easier to coil/store. I needed 50 feet at a Michigan State Park last week. I do have a 5000 BTU window AC unit that I haven't used yet, but it only draws 6 Amps so 20 should be plenty. I considered carrying two cords, maybe 20 and 40 for flexibility, but so far just toss in the 60 footer. I added a 20 Amp surge protector inside the Scamp
to protect the whole system. Ten thousand miles later it still works well. Thanks to those who did this before me and inspired the mod.
On the other hand, with the 100 watt solar panel
on the roof we seldom have need for shore power anyway. The Michigan park was in deep forest shade on the shore of Lake Superior so the panel was pretty useless. The battery
would have easily lasted the three days of our visit, but the campground power was there and "free" so we hooked up. My ten commandments of Scamping include: thou shalt never lose an opportunity to charge the battery
, dump the tanks, fill the fresh water, check the propane
, etc, etc.