General Order 64-A

Original Version

Rule 32.6

32.6    New Rule

Strikeout and Underlined Version

Rule 32.6

32.6    Location of Common Neutral Conductor on Cross Arms.

1.    Where all circuits are in excess of seven hundred fifty (750) volts, the common neutral line conductor may be located in a pin position in the primary space.

2.    Where a circuit or circuits of less than seven hundred fifty (750) volts are involved, the common neutral line conductor shall be located in a secondary related pin position. This rule shall not apply where only D.C. feeders, signal and communication or four hundred forty (440) volt A. C., or other nonrelated power circuits alone are involved.

3.    Where circuits of less than and of more than seven hundred fifty (750) volts are involved, the maintenance of a common neutral line conductor in both primary and secondary positions is permissible, pro- vided proper designation of conductor in the primary position is made, and that a metallic connection of a size not smaller than the largest neutral line conductor involved is made at each location requiring a ground and that said connection is installed in accordance with the construction requirements for ground wires on poles.

4.    The multi-grounded primary or secondary neutral line conductor, where continuous, may be used as a return loop of the common neutral, provided it:

(1)    Is of sufficient current-carrying capacity as provided in Rule 49.4-B, and

(2)    Is maintained in its relative position on the cross arm, and

(3)    Is grounded throughout in accordance with the requirements for common neutral line conductors. (See Rule 32.4-D)

5.    The common neutral conductor may be installed in the same conduit with related phase conductors, provided that the insulation of the neutral conductor is not less than that required of the phase wires and, further, that it is considered as a phase wire for the entire run between terminals. Where the conduit installation is a permanently grounded metal vertical riser pipe, the reference to insulation of common neutral shall not apply, provided the neutral wire is connected to both ends of the riser pipe and permanently grounded.

Final Version

Rule 32.4

32.6    Location of Common Neutral Conductor on Cross Arms.

1.    Where all circuits are in excess of seven hundred fifty (750) volts, the common neutral line conductor may be located in a pin position in the primary space.

2.    Where a circuit or circuits of less than seven hundred fifty (750) volts are involved, the common neutral line conductor shall be located in a secondary related pin position. This rule shall not apply where only D.C. feeders, signal and communication or four hundred forty (440) volt A. C., or other nonrelated power circuits alone are involved.

3.    Where circuits of less than and of more than seven hundred fifty (750) volts are involved, the maintenance of a common neutral line conductor in both primary and secondary positions is permissible, pro- vided proper designation of conductor in the primary position is made, and that a metallic connection of a size not smaller than the largest neutral line conductor involved is made at each location requiring a ground and that said connection is installed in accordance with the construction requirements for ground wires on poles.

4.    The multi-grounded primary or secondary neutral line conductor, where continuous, may be used as a return loop of the common neutral, provided it:

(1)    Is of sufficient current-carrying capacity as provided in Rule 49.4-B, and

(2)    Is maintained in its relative position on the cross arm, and

(3)    Is grounded throughout in accordance with the requirements for common neutral line conductors. (See Rule 32.4-D)

5.    The common neutral conductor may be installed in the same conduit with related phase conductors, provided that the insulation of the neutral conductor is not less than that required of the phase wires and, further, that it is considered as a phase wire for the entire run between terminals. Where the conduit installation is a permanently grounded metal vertical riser pipe, the reference to insulation of common neutral shall not apply, provided the neutral wire is connected to both ends of the riser pipe and permanently grounded.