Your kettle's power cable is sized to handle the relatively tiny current put into it, but even then it does warm up slightly. Try to run a million amps through

Your kettle's power cable is sized to handle the relatively tiny current put into it, but even then it does warm up slightly. Try to run a million amps through it, and it will vaporize. This type of laser carries so much energy that even a tiny fraction of a percent absorption will add up quickly, hence the propensity for injury.