General Order 95
Section III
Requirements for All Lines
32.3 Colinear Lines and Crossing Lines
The centerline clearance between poles and conductors which pass unattached shall be not less than 1 1/2 times the clearance specified in Table 1, Case 8 , except where the interset pole is within 10 feet of a pole to which the passing conductors are attached. Where poles of the two lines are less than 10 feet apart, clearances not less than as specified in Table 1, Case 8 shall be maintained between the centerline of any pole and conductors which pass unattached. Where clearance crossarms are installed in the construction and maintenance of colinear lines or crossings, clearances not less than as specified in Table 1, Case 8 shall be maintained between all conductors on the clearance crossarms and the centerline of poles to which such crossarms are attached.
The provisions of the foregoing rules for colinear lines are subject to modifications specified in Rule 84.4 –D3 where communication circuits only are concerned and the provisions of Table 1, Case 10.