Electricity – Earth and Neutral (Total)

Description

The information given in this chapter is taken from the report resulting from the 1984 IEC 479-1 standard and the 1987 IEC 479-2 standard which concern the effects of current flowing through the human body. The risks run when an electric current flows through a person basically depend on its current value and the exposure time.

This current depends on the contact voltage (also known as “touch voltage”) which affects this person, and on the impedance this current encounters when passing through the human body. This relationship is not linear because this impedance depends on the path taken through the body, the current frequency, the applied contact voltage and the dampness of the skin.