This includes inter-American travel, as a few countries commonly use 220-240 volts. A matching electrical socket (power mains) does not necessarily mean the voltage is the same as ones home country. The doubling of voltage results in a very dangerous four-fold increase in power and heat. Not checking that dual-voltage small appliances have been adjusted correctly for 220-240 volts is also unsafe. Going near or under a downed power line, even if theres no direct contact with the wire. Also, not remaining inside your vehicle and waiting for rescue should a power line fall on it. See also Lightning safety

Treatment
First aid
An electrically burned patient should not be touched or treated until the source of electricity has been removed. Electrical injuries often extend beyond burns and include cardiac arrhythmia, such as ventricular fibrillation. First aid treatments include assessment of consciousness of the victim, evaluation of pulse and circulation, and treatment of burns. Hospitalization
Typically, an electrical burn patient has a lower affected body surface area than other burn patients, yet complication risks are much higher due to internal injury. Often, the damaged internal tissue demands hospitalization. If not treated, this damaged tissue can cause complications (such as gaseous gangrene from dead tissue or loss of blood flow to limbs) and the damaged body parts may need to be amputated. Repeated removal of the damaged tissue and extensive rehabilitation are common, while limb amputation rates for victims who experience direct electrical contact can be as high as 75%.
Most commonly, electric injuries primarily damage the outer limbs, but more critical portions of the body may be affected as well causing severe complications.As the body comes into contact with an electrical source, it becomes part of the electrical circuit. As such, the current has a point of entry and an exit at two different points on the body. The point of entry tends to be depressed and leathery whereas the exit wound is typically more extensive and explosive. It is hard to accurately diagnose an electrical burn because only the entry and exit wounds are visible and the internal damage is not. Prevention
Basic electrical safety
The following are some examples of unsafe practices which could lead to electric injury (this list is not exhaustive. ):
Using electrical appliances while wet (showering, bathing, etc.) as plumbing is often connected to electrical ground, and wet skin loses much of its resistance. Exception for newer quality appliances intended for the bathroom when not simultaneously showering, bathing, being in a path of water going to plumbing, or touching bare concrete or sheet metal. Standing on a dry carpet or rug is ideal. All power mains outlets should have a wall cover to avoid accidentally touching the electrified sides between the wall and outlet. This is especially important for children, as their small fingers can easily reach into this gap along the sides. Using AC electrical appliances around bathtubs, swimming pools, hot tubs, etc. with the risk that the appliance may fall into the water and cause electrocution.