Circular Mil Ohm/Foot to Ohm Inch Conversion
Convert between Circular Mil Ohm/Foot and Ohm Inch quickly and accurately.
How to Convert Circular Mil Ohm/Foot to Ohm Inch
Conversion Formula
Example
Convert 15 CM·Ω/ft to Ω·in:
Unit Information
Learn about the electric resistivity units you're converting between
Circular Mil Ohm/Foot
CM·Ω/ft
Definition
A specialized unit of electric resistivity used in electrical engineering for wire and cable specifications. Combines the circular mil (area unit) with ohm per foot to express resistivity in terms of wire gauge and length.
History/Origin
Developed specifically for electrical wire and cable manufacturing in North America. The circular mil unit represents the cross-sectional area of a wire, making this unit practical for specifying wire resistivity in electrical applications.
Current Use
Extensively used in electrical wire and cable manufacturing, electrical engineering, and power distribution systems. Essential for calculating voltage drop, power loss, and conductor sizing in electrical installations.
Multiplier
2E-9
Offset
0
Ohm Inch
Ω·in
Definition
An imperial unit of electric resistivity equal to 0.0254 ohm meters. Used primarily in countries following imperial measurement systems for electrical resistivity measurements and material characterization.
History/Origin
Developed as an imperial equivalent to the metric ohm centimeter for electrical resistivity measurements. The inch-based unit was commonly used in North American electrical engineering and manufacturing industries.
Current Use
Primarily used in North American electrical engineering, manufacturing, and quality control applications. Common in industries that follow imperial measurement standards for material resistivity testing and specification.
Multiplier
0.025
Offset
0
Circular Mil Ohm/Foot to Ohm Inch Conversion Table
| Circular Mil Ohm/Foot [CM·Ω/ft] | Ohm Inch [Ω·in] |
|---|---|
| 1 CM·Ω/ft | 7E-8 Ω·in |
| 10 CM·Ω/ft | 7E-7 Ω·in |
| 25 CM·Ω/ft | 0.000002 Ω·in |
| 50 CM·Ω/ft | 0.000003 Ω·in |
| 100 CM·Ω/ft | 0.000007 Ω·in |
| 0 CM·Ω/ft | 0E+0 Ω·in |
| -10 CM·Ω/ft | -7E-7 Ω·in |
| -40 CM·Ω/ft | -0.000003 Ω·in |
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