Electrical Exam Term
Short Circuit
An abnormal connection of very low resistance between two points of different potential in a circuit, resulting in excessive current flow.
Detailed Explanation
Short circuits occur when a hot conductor contacts a neutral, ground, or another hot conductor. The resulting high current can cause fires, equipment damage, and electrocution hazards. Overcurrent protection devices (breakers and fuses) are designed to interrupt short circuit current. Available fault current at the service must be calculated to ensure protective devices can safely interrupt it (interrupting rating).
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Practice QuestionEasy
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