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The main question: Is it a violation of any NEC article to terminate a conduit in one section of switchgear and land the wires in the section next to it?

Details: 2000amp 480volt main circuit breaker in section #1. Main feeds come in underground and the buss bars are up high. Section 2 is the distribution board with 7 - 400amp breakers (feeding 500MCM copper wire) and 8 smaller breakers. Section 2 is pretty full with wires.

The conduits in question are a 2 1/2inch with 4-500MCM feeding a rooftop air unit and a 3/4inch with 4-#12 feeding an exhaust fan.

The 500MCM in question are fed from the bottom left 400amp breaker of the distribution board, passing through to section 1 and are currently resting on the top buss bar.

Dennis E.

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[Linked Image from electrical-photos.com]