BASIC NEC CODE RULES AND DESIGN PRACTICE

NEC 220-2, use NEC 310-16 for ampacity. This applies to not more than 3 phase conductors in 1 conduit. ... 600 3-3/0 Parallel 480. 700 3-4/0 Parallel 560 . 800 3-300 MCM Parallel 640 ... All the buildings served by a common transformer must be reevaluate to insure that the. existing short circuit protection is adequate for the larger ... ................
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