Why might the wingspans of birds be considered when determining the spaces between parallel wires on power....

Question

poles?

Answer 1

Most likely because one wing connecting with one wire will not complete an electrical circuit. Thus, the bird is not harmed if it flies too close. On the other hand, if the wires are placed closer than the wingspans of the area's larger birds, a bird could touch two wires and complete a circuit. In this case, the bird would be electrocuted.

Answer 2

Because if any bird ever touched both lines at the same time, all you'd have left is scorched feathers scattered along the right of way. Maybe a few chunks of carbonized meat.

Answer 3

To prevent power shorts or worse.

Answer 4

So they don't keep getting fried. It saves on maintence costs.