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Brownout (electricity) facts for kids

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20110313-TokyoTower
Brownout in Japan

A brownout is a drop of voltage in an electrical power supply. Brownouts may be done intentionally in order to reduce the load during an emergency. This is done to prevent a total supply failure ("blackout"). Brownouts can also be caused accidentally by faults in the electrical grid which cause a drop in voltage.

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Brownout (electricity) Facts for Kids. Kiddle Encyclopedia.