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For a stranded cable:
Use a micrometre or vernier gauge to measure 1 strand; this gives you the diameter of the strand.
Halve this figure for the radius, square the number and multiply by pi.
(pi r squared is the area of a circle).
Finally multiply the result by the number of strands which then gives you the true csa of the stranded cable.
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Earn +20 ptsQ: Cross sectional area of stranded wire?
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Continue Learning about Math & Arithmetic
What happens to the cross-sectional area of metal wire if you double the diameter?
If the diameter doubles (x2), the cross-sectional area quadruples (x4).
How do you work out the cross-sectional area of a wire?
Imagine the wire is straight, now cut through at right angle to the centre line, the exposed surface is the cross sectional area, on a round wire it = pi * radius2 (area of a circle)
How does the cross sectional area of wire affect resistance?
Other things being equal, more cross-sectional area will cause less resistance.
What is cross-sectional area of a wire if its outside diameter is 0.0625 inch?
0.0031
What happens to its cross-sectional area of the metal wire if you double the radius?
It quadruples.
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