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.
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