It is always interesting to see how things are done elsewhere in the world. I have a smallish (by american standards) motorhome and it is wired with 50a 240/120v service. I guess part of the reason is that air conditioning is common here. Mine has a 15,000 btu refrigeration-type air conditioner on the roof. Propane is very common for heating, cooking, and refrigeration. There are lots of listed appliances for that purpose. What is scary here is to see people using unvented catalytic heaters in these small spaces.