Summarizing Electric Hazards and the Human Body
Summary
- The two types of electric hazards are thermal (excessive power) and shock (current through a person).
- Shock severity is determined by current, path, duration, and AC frequency.
- This table lists shock hazards as a function of current.
- This figure graphs the threshold current for two hazards as a function of frequency.
Glossary
thermal hazard
a hazard in which electric current causes undesired thermal effects
shock hazard
when electric current passes through a person
short circuit
also known as a “short,” a low-resistance path between terminals of a voltage source
microshock sensitive
a condition in which a person’s skin resistance is bypassed, possibly by a medical procedure, rendering the person vulnerable to electrical shock at currents about 1/1000 the normally required level
This lesson is part of:
Electric Current, Resistance, and Ohm's Law
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