The datasheet can be found here. They use 50mA so the whole string should only use 50mA.

I keep hearing all the time that things only take as much current as they need. So a 50mA string of LEDs will be fine on a 13A mains circuit. I read that they will only take too much current if i put too many volts into them.

The power in our house can be a bit strange. We are supposed to be getting only 230V but ive never seen it drop below 240 and quite often its as high as 250. Dips wont be a problem and spikes should be fine as i could put over 300V into the string and still be within the max voltage