A multi- chip module is an integrated circuit package. Thousands of circular mils are an old measurement of wire gauge. The square milimeters are calculated from 1 MCM to 1 kcmil. A mil is one thousandth of an inch. 40 MCM is the diameter of a wire 200 mils.
Let's Get It Fixed!
HomeX virtual experts will assess your issue (for free!) and can resolve simple problems.