Current through the body, even at levels as low as 3 milliamperes, can also cause injuries of an indirect or secondary nature in which involuntary muscular reaction from the electric shock can cause bruises, bone fractures and even death resulting from collisions or falls (i.e. fall from a ladder after receiving a small shock).
Current & Effect
0.5 – 3 mA Tingling sensations
3 – 10 mA Muscle contractions (painful)
10 – 40 mA “Can’t Let Go” phenomena
30 – 75 mA Respiratory paralysis (possibly fatal)
100 – 200 mA Ventricular fibrillation (likely fatal)
200 – 500 mA Heart clamps tight
1.5 A Tissue and organs begin to burn
Typical effects on the human body based on exposure
Burn Hazards Associated With Electricity
The human skin provides great protection from normal elements; however human skin provides poor protection from extreme heat which is a byproduct of exposure to electricity. Typically there exist three types of burns: Electrical burns happen when electric current flows through tissues and organs. Arc burns result from high temperatures (up to 35,000 F) when an arc flash event occurs. Thermal burns typically happen when skin touches a hot surface.