Single-phase electrocution and two-phase electrocution.

Single-phase electrocution is when the human body touches the electrified equipment or a phase of the line conductor, a phase of current through the human body through the earth back to the neutral point, this form of electrocution is called single-phase electrocution.

Two-phase electrocution is the human body at the same time touching the two-phase electrocution charged body electric accident, the human body is subjected to 380V line voltage, the danger is generally greater than the single-phase electrocution. The human body, but contact with two-phase electrified body when the current is relatively large, minor will cause electrocution burns or lead to disability, serious can lead to electrocution fatal accidents, and two-phase electrocution so that the electrocution of people die between only 1 ~ 2 seconds.

Expanded

Common causes of electrocution:

1, the summer weather is humid, rainy, reducing the insulation of electrical equipment, and at this time, fans, air conditioning power or temporary lines increased, the relevant operators may not wear overalls and insulating protective gear due to the heat, coupled with the human body at this time sweaty, easy to Conductive.

2, summer is the busy season, the rural power consumption and electricity places to increase, water pumps, irrigation and lighting during the busy season, such as the increase in temporary power, and even some people directly with wires hanging, hooking overhead distribution lines to obtain electricity, resulting in an increase in the chances of electrocution; there are also people to save money on the cost of privately owned grids, etc., an increase in electric shock and other potential safety hazards.

3, summer house expansion, renovation, engineering construction projects increased, part of the transmission lines along the houses, buildings and power lines with insufficient safety distance, the construction process is likely to lead to construction appliances, materials, etc. touched the charged line, resulting in electrocution.

Baidu Encyclopedia - Single-phase electrocution

Baidu Encyclopedia - Two-phase electrocution