927.07 SPACING OF WIRES.

   The minimum separation in a horizontal direction at points of support of supply conductors carrying a difference of potential of zero volts to 500 volts shall not be less than six inches, and for a difference of potential of 500 volts to 7,500 volts, not less than twelve inches. Where conductors of one line are carried near the supporting structure of another line and within thirty inches of the supporting structure of the other line, they must be attached to the supporting structure maintaining their relative position on the structure.

(1961 Code Sec. 306)