I am installing 5x20w surface mounted downlights in the kitchen, i have a 105w transformer (dimmable) which just has two wires from it ( no earth ), anyway i would just like to know what cable i should use to connect the lights. Focus and B+Q only seem to sell 0.5mm twin cable which it says is for lighting and small appliances ( fuse 3amp and max 720w ) or something like that.. would it be ok to use or should i get a bigger size twin cable. Thanks