High Voltage
The U.S. Department of Energy (DOE) Electrical Safety Guidelines classify high voltage as over 600 volts.
Also, OSHA standards, such as 1910.303(h)(5)(ii), classifies any use of electrical service over 600 volts as high voltage.
Sometimes high voltages lead to additional injuries. High voltages can cause violent muscular contractions. You may lose your balance and fall, which can cause injury or even death if you fall into machinery that can crush you. High voltages can also cause severe burns.
At 600 volts or more, the current through the body may be as great as 4 amps, causing damage to internal organs such as the heart. High voltages also produce burns. In addition, internal blood vessels may clot. Nerves in the area of the contact point may be damaged. Muscle contractions may cause bone fractures from either the contractions themselves or from falls.
Knowledge Check Choose the best answer for the question.
2-3. OSHA classifies any use of electrical service _____ as high voltage.
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