1wireSquare number (square millimeters)=pi (3.14) x square of wire radius (millimeters)

2. Knowing the square of the wire, calculating the wire diameter is also the same, for example:

The diameter of a 2.5-square wire is 2.5 ÷ 3.14=0.8, and then square it to obtain 0.9 millimeters. Therefore, the diameter of a 2.5-square wire is 2 × 0.9 millimeters=1.8 millimeters.

3. Knowing the diameter of the wire, the square of the wire can also be calculated using the formula for calculating the circular area:

Square of wire=pi (3.14) x square of wire diameter/4

4. The size of the cable is also measured in square, and multi strand wires are the sum of the cross-sectional areas of each wire.

5. The calculation formula for cable cross-sectional area:

0.7854 x square of wire radius (in millimeters) x number of strands

For example, 48 strands (with a wire radius of 0.2 millimeters per strand) of 1.5 square meters of wire:

0.785 × (0.2 × 0.2) × 48=1.5 square meters