Article 392 covers cable tray systems, including ladder, ventilated trough, ventilated channel, solid bottom, and other similar structures. As noted in Sec. 392.12, "Cable tray systems shall not be ...
Explanation: First, convert the outer diameter of the ½-inch cable to square inches. Why? Because the NEC calculations for determining maximum raceway and cable tray fill are based on the square inch ...
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