For feeder busway No. 2, rated at 1600 amperes, what is the current density in busbars with cross-sectional area of 394 square millimeters? A) one ampere/mm2 B) two amperes/mm2 C) three amperes/mm²d. four amperes/mm²

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Quizplus · Accepted Answer

The current density is calculated by dividing the current by the cross-sectional area. For a 1600 ampere busway with a cross-sectional area of 394 mm², the current density is 1600 A / 394 mm² = approximately 4.06 A/mm², which rounds to four amperes/mm². However, since the choices provided are whole numbers, the closest lower option is two amperes/mm².

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