In the context of cable, "MCM" stands for "thousand circular mils," which is a unit of measurement used to describe the cross-sectional area of electrical conductors. One MCM equals 1,000 circular mils, where a circular mil is the area of a circle with a diameter of one mil (one-thousandth of an inch). This measurement helps in determining the current-carrying capacity and resistance of the cable. MCM is commonly used in the United States for large conductors, especially in industrial and commercial applications.
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The amp rating of a 500 MCM (thousand circular mil) cable can vary depending on the insulation type and installation conditions. Generally, a rough estimate for a 500 MCM cable with THHN insulation in a typical installation would be around 380-400 amps. However, it is recommended to consult the manufacturer's specifications or a qualified electrician to determine the exact ampacity for a specific application.
MCM stands for 1000's circular mils. Broken down MCM means 1000's (M) of (C)ircular (M)ils. A Circular Mil means the area of a circle 1/1000 inch in diameter. 1000 MCM conductors are 1 inch in diameter.
Using the AWG for wire sizes only goes up to 4/0. After that the increases use MCM to size the wire. So your 262 MCM wire size will be same in AWG. There is no 262 MCM in the North American market place. It goes in 50 MCM increments starting at 250 MCM , 300 MCM, 350 MCM, 400 MCM right up to 2000 MCM cable.
A parallel run of 750 MCM AWG conductors will handle 1000 amps. if we want 1000amps to flow, 250sqmm cable is enough.
MCM is 1900 M means 1000 and C means 100. If the C goes before the M, then it subtracts. So the end result would be 1900 because it is 1000+900.
3C350MCM refers to a specific type of coaxial cable, where "3C" indicates the diameter of the cable's core conductor, and "350" represents the characteristic impedance in ohms. "MCM" stands for "thousand circular mils," a unit of measurement for the cross-sectional area of the conductor. This type of cable is commonly used in RF (radio frequency) applications, telecommunications, and broadcast systems.
1 MCM means 1000 circular mils, and a circular mil is the area of a circle with diameter 1 mil ( that is 1/1000 of one inch). In metric terms, 1 MCM = 0.5067 sq mm
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MCM is the Roman numeral for 1900. M means 1000 and C means 100. If the C goes before the M, then it subtracts. So the end result would be 1900 because it is 1000+900.
A 750 MCM copper conductor with an insulation factor of 90 degrees C is rated at 500 amps.