Electrical Exam Term
Ampacity
The maximum amount of electric current a conductor or device can carry continuously without exceeding its temperature rating.
Detailed Explanation
Ampacity is determined by factors such as conductor material (copper vs. aluminum), insulation type, ambient temperature, and the number of conductors in a raceway. NEC Table 310.16 is the primary reference for conductor ampacities. Derating factors must be applied when conductors are bundled together or installed in high-temperature environments.
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Practice QuestionEasy
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