Electricity – Electrical Protections (Total)

Description

The electrical risk is at first physical: the human body accidentally in contact with voltage is conducting electrical current which can produce:

• Internal or external burns
• Muscular tetanization

Then, for the materials, the risks and consequences are mainly thermal: all electrical cables, features, apparatus…etc, allow a rated (and maximum) current. Excess current gives overheating (by Joule Law) which can cause deterioration and/or fire; short-circuit can be classified as a “speedy” overheating.