Ahh. Yes, there is a seperate socket for 10A (no wonder it wasnt working).

Why do you times by 8?

Just to get things straight. When my multimeter is set to 10A does that just mean i cant put more than 10A through it or do i have to times/divide the result by 10? Same for the ohms. If i set it to 200ohms then will 10ohms display as 10 on the display or would it be 2000 or 0.05 or something?