The cable isn't the issue, it's the power coming from the wall. THat's a 120v/240v power supply. More than that and it's crispy.
Yes, this is just the maximum power the cable is rated to carry, it won't be what is coming out of the wall
The volt is not a unit of power. As the voltage supply in any country is 100V-240V then your cable is o.k. The important thing is the gauge ie the current (Amps) it can carry. As the mains power circuits in most countries is fused at 13Amps - 16Amps your cable has to be safely above that Amps are the thing that will cause a cable to overheat and catch fire Therefore check the gauge of you cable
