Gas and Electric in europe

[lesstatt]

Planning a european roadtrip in a motorhome soon and after reading a couple of books im a bit confused about the Gas bottles available in france and spain, apparantly one type we have here is available and one isnt (calor gas etc), can anyone please enlighten me. Also on the electrics they mention checking the polarity before connecting, now i thought you connected the big blue plug, connected your normal sockets and it was fine, or am i wrong

[lesstatt]

Ok thanks, how do you check the polarity and if it is wrong will you damage anything before you switch it round

[lesstatt]

http://www.ebay.co.uk/itm/EU-Europe-Caravan-Campin...

http://www.ebay.co.uk/itm/UK-Mains-Socket-Tester-P...

Ah like these you mean