When I camped in a tent it was always reiterated that one shouldn't use a 'normal' extension socket on the EHU and to get a special camping unit. Totally get that, not a problem.
I have a plug socket at the side of my caravan which I'm presuming is for the awning. Do the same safety considerations re condensation etc not apply in an awning as I can't find a safety camping plug lead that plugs into a normal plug point rather than the EHU socket? Does that make any sense?