Question
Download Solution PDFThe protection system of the household circuit that trips if someone receives a shock is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- The sensation of electric shock is caused by the flow of electric current through the human body to the earth.
- When a person comes in contact with electrically live objects like water heaters, washing machines electric iron, etc., the extent of damages caused by this current depends on its magnitude and duration.
- This kind of current is called the leakage current which comes in milli-amps.
- These leakage currents being very small in magnitude, hence undetected by the fuses/MCBs are the major cause for the fires due to electricity.
- Residual current operated circuit breakers provide maximum protection from electric shocks and fires caused due to earth leakage current and also prevents the waste of electrical energy.
- These residual current circuit breakers (RCCB) are popularly called as earth leakage circuit breakers (ELCB).
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