Battery cut off switch

[Johnnybizzle]

Hi Guys,

Going to add a cut off switch to my roadster, what cable should i use.
its a bike engine and 12v bike bettery

Regards Jon

[robo]

at runs of 1.5 and 4 mtrs
0-25 amps 6 mm sq 10 mm sq
25-45 amps 16 mm sq 25 mm sq
45-85 amps 25 mm sq 35 mm sq
85-125 amps 35 mm sq 50 mm sq
125- 180 amps 50 mm sq 70 mm sq
180-330 amps 70 mm sq 90 mm sq

Just need to know what you are drawing on the starter,