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How do you calculate the area of a wire?
The cross-sectional area of the wire is the area of a circle of radius r: A=πr2=π(d2)2, where d is the diameter of the wire.
How do you find the area of a strand?
First we need to calculate the area of a single strand: This is an accurate method to calculate the Diameter of Single Strand Wire.
- 0.20 x 0.20 = 0.04.
- 0.04 x 3.14 = 0.1256.
- 0.1256 ÷ 4 = 0.0314.
- 86 x 0.0314 = 2.7004.
- 0.050 x 0.050 = 0.0025.
- 0.0025 x 3.14 = 0.00785.
- 0.00785 ÷ 4 = 0.0019625.
- 255 x 0.0019625 = 0.500.
How is CMA wire calculated?
Page 1
- Wire Sizes.
- HOW TO COMPUTE CIRCULAR MIL AREA OF (CMA) OF VARIOUS SHAPES OF WIRE. Round Solid Wire AWG.
- x.
- D x D = CMA.
- Dia. Dia.
- Multiply the diameter in Mils by itself. CMA = D2. Multiply the diameter of one strand (in mils) by itself, and then multiply the result by the total number of strands.
- WIRE SIZES.
- D. D.
How do you find the area of a stranded conductor?
Calculating the Area of a Cable
- As an example, let’s assume we want to know the area for a copper conductor cable having 41 strands of 0.20mm wire.
- 0.20 × 0.20 = 0.04.
- 41 × 0.0314 = 1.2874.
What is the cross-sectional area of a cable?
The cross section or the cross sectional area is the area of such a cut. It need not necessarily have to be a circle. Commercially available wire (cable) size as cross sectional area: 0.75 mm2, 1.5 mm2, 2.5 mm2, 4 mm2, 6 mm2, 10 mm2, 16 mm2.
How do you calculate the number of strands in cable?
340.5 D2 GNK = lbs./1,000 ft. 340.5 ( D2 – d2 ) G = lbs./1,000 ft. 340.5 ( D2 – d2 ) G = lbs./1,000 ft….Cable Design Formulas.
| F | = | N P d / Sin (a) |
|---|---|---|
| D | = | diameter over dielectric core in inches |
| d | = | diameter of shielding strand in inches |
What is the cross sectional area of a cable?
How do you find the circular mil area of a wire?
If a wire has a cross-sectional diameter of 1 mil, by definition, the circular mil area (CMA) is A = D2, or A = 12, or A = 1 circular mil. To determine the square mil area of the same wire, apply the formula A = πr2; therefore, A = 3.14 X (. 5)2 (. 5 representing half the diameter).
How do you determine the size of a conductor?
Divide the voltage running through the cable by your target current. If, for instance, 120 volts will act on the cable, and you want 30 amps to run through it: 120 / 30 = 4. This is your target resistance, measured in ohms. 30,000 x 1.724 x 10^-8 = 0.0005172 ohm sq.
How do you calculate the area of a cable?
Calculating the Area of a Cable. For single-strand cable use the following formula to calculate the exact area of the cable where the diameter of the cable-strand is known: s = π (D/2) 2. Where: s = area of a single strand D = diameter of a single strand p = 3.14.
How do you calculate the cross sectional area of a wire?
In order to calculate the cross-sectional area of a wire in square millimeters, it is absolutely necessary to first know the diameter of the wire. Either measure the diameter or, assuming you know the gauge of the wire, look it up in a table.
Why does wire take more mils per ampere?
The reason it generally takes more circular mils per ampere for the heavier gauges is that wire circumference varies linearly versus the radius and diameter while the cross sectional area varies as the square of the radius and diameter.