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What is bigger 4 0 or 250 MCM?

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What is bigger 4 0 or 250 MCM?

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MCM is an abbreviation for thousands of circular mils, an old measurement of wire gauge. 1 MCM = 1 kcmil = 0.5067 square milimeters. A mil is 1/1000 inch. A wire 200 mils in diameter is 40 MCM.

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