BASIC NEC CODE RULES AND DESIGN PRACTICE
ampacity of wire for any load. NEC 220-2, use NEC 310-16 for ampacity. This applies to not more than 3 phase conductors in 1 conduit. Warning Voltage Drop NEC 310-16 wire ampacity tables do not take into account voltage drop, only thermal limit. Overhead triplex, use 310-16 for wire ampacity. Rule of Thumb
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