Kcmil meaning

A circular mil is a unit of area, equal to the area of a circle with a kcmil meaning of one mil one thousandth of an inch or 0. It corresponds to approximately 5.

Some countries have different ways of measuring electrical wire size, making it tough to standardize one set of measurements. In other countries overseas, like Britain, you might see the now withdrawn Standard Wire Gauge SWG or the more widely used IEC , the dominant gauge sizing system found in most of the world. A wire is sized by cutting a cross-section of AWG-sized wire and measuring its diameter. When a wire is larger than , it has to be measured in MCM thousands of circular mils , or kcmil. Understanding how AWG sizing works goes a long way toward helping answer other common electrical questions, including how much current it can safely handle. Wire gauges also relate to carrying capacity, telling us how much current a copper conductor can safely carry without damaging itself or its insulation.

Kcmil meaning

A circular mil is a unit of area , equal to the area of a circle with a diameter of one mil one thousandth of an inch or 0. It corresponds to approximately 5. It is a unit intended for referring to the area of a wire with a circular cross section. The area in circular mils, A , of a circle with a diameter of d mils, is given by the formula:. In many NEC publications and uses, large wires may be expressed in thousands of circular mils, which is abbreviated in two different ways: kcmil [1] or MCM. As a unit of area, the circular mil can be converted to other units such as square inches or square millimetres. The formula for the area of an arbitrary circle in circular mils can be derived by applying this conversion factor to the standard formula for the area of a circle which gives its result in square mils. To equate circular mils with square inches rather than square mils, the definition of a mil in inches can be substituted:. Likewise, since 1 inch is defined as exactly A AWG solid wire is defined to have a diameter of exactly 0. The cross-sectional area of this wire is:. Some tables give conversions to circular millimetres cmm.

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Some countries have different ways of measuring electrical wire size, making it tough to standardize one set of measurements. In other countries overseas, like Britain, you might see the now withdrawn Standard Wire Gauge SWG or the more widely used IEC , the dominant gauge sizing system found in most of the world. A wire is sized by cutting a cross-section of AWG-sized wire and measuring its diameter. When a wire is larger than , it has to be measured in MCM thousands of circular mils , or kcmil. Understanding how AWG sizing works goes a long way toward helping answer other common electrical questions, including how much current it can safely handle. Wire gauges also relate to carrying capacity, telling us how much current a copper conductor can safely carry without damaging itself or its insulation. When electricity is carried by a conductor, it generates heat as a by-product. Besides the heat that naturally builds up in a conductor during regular use, other factors can impact the ampacity of a wire, including where you install them.

Kcmil meaning

We generally use these thick wires when we need more than amp service. Which kcmil wire exactly we need for carrying high currents is determined by the kcmil wire size chart check the chart further on. Example: What is the ampacity of kcmil copper wire? They are both abbreviations for the same thing. A circular mil measured a cross-section of a wire. Circular mill is a very small unit — equal to 0. The key question kcmil wire size chart which is the same as MCM wire size chart answers is how many amps can a wire handle.

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However, this unit is rarely used in practice. Log In. Neerja Indian. Some tables give conversions to circular millimetres cmm. What is Tie Wire? Two clicks install ». A circular mil is a unit of area, equal to the area of a circle with a diameter of one mil one thousandth of an inch or 0. Term » Definition. Zira US English. Alex US English. Toggle limited content width.

Both kcmil and AWG denote the cross-section of wires electrical conductors, to be exact. Here is what each of these wire size units means:. Well, first of all, we have to understand that all kcmil wires are bigger have a larger diameter than AWG wires.

Wendy British. Wire gauges also relate to carrying capacity, telling us how much current a copper conductor can safely carry without damaging itself or its insulation. What is Exposed Run Tray Cable? If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. One KCMIL is equal to circular mils, where a circular mil is the area of a circle with a diameter of one mil one thousandth of an inch. Wikipedia Rate this definition: 0. In particular, the maximum permissible overcurrent protection devices may set a lower limit. The diameter in the table below is that of a solid rod with the given conductor area in circular mils. Likewise, since 1 inch is defined as exactly Get the Latest Copper Pricing See the most up-to-date information with the latest market data available. Can Silicone Damage Automotive Paint? Those conversions also make it easier to figure out how much space a conductor will take up within a conduit or other raceway, based on NEC guidelines. When someone is measuring the diameter of a piece of copper wire, you might hear it measured in mil or mils. Daniel British. Notify me of new comments via email.