When the voltage of a current goes up, your skin's resistance goes down. ... It can pass through your skin into your blood vessels. If the level of amps is high enough, it can do some serious damage to your body tissues. It could even kill you!
How many volts that can kill a person?
The human body has an inherent high resistance to electric current, which means without sufficient voltage a dangerous amount of current cannot flow through the body and cause injury or death. As a rough rule of thumb, more than fifty volts is sufficient to drive a potentially lethal current through the body.
How much voltage is dangerous?
In industry, 30 volts is generally considered to be a conservative threshold value for dangerous voltage. The cautious person should regard any voltage above 30 volts as threatening, not relying on normal body resistance for protection against shock.