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Original Version
Rule 81.3-A

81.3-A. Replacement of Wood Poles in Grade F Construction
Wood poles in Grade F construction shall be replaced or reinforced before the safety factor has been reduced to less than one, except that the circumference of sound solid wood within 18 inches above and below the ground line on such poles before replacement or reinforcement shall not be less than as follows:
Poles supporting 10 or less open wire conductors 9 inches
Poles supporting cable, or more than10 open wire conductors 12 inches

Strikeout and Underline Version
Rule 81.3-A

81.3-A. Replacement of Wood Poles in Grade FC Construction
Wood poles in Grade FC construction shall be replaced or reinforced before the safety factor has been reduced to less than one, except that the circumference of sound solid wood within 18 inches above and below the ground line on such poles before replacement or reinforcement shall not be less than as follows:
Poles supporting 10 or less open wire conductors 9 inches
Poles supporting cable, or more than10 open wire conductors 12 inches

Final Version
Rule 81.3-A

81.3-A. Replacement of Wood Poles in Grade C Construction
Wood poles in Grade C construction shall be replaced or reinforced before the safety factor has been reduced to less than one, except that the circumference of sound solid wood within 18 inches above and below the ground line on such poles before replacement or reinforcement shall not be less than as follows:
Poles supporting 10 or less open wire conductors 9 inches
Poles supporting cable, or more than10 open wire conductors 12 inches