32.4-A1)    750-7500 Volts and More than 21,000 Volts: Supply circuits of 750-7500 volts shall not be carried on the same crossarm with circuits of more than 21,000  this level.  Where construction is used, circuits of different classifications shall be carried on opposite ends of the crossarm with a horizontal separation of not less than pin spacings required for the highest voltage concerned, but not less than 36 inches between the nearest conductors of different classification.

32.4-A1)    750-7500 Volts and More than 21,000 20,000 Volts: Supply circuits of 750-7500 volts shall not be carried on the same crossarm with circuits of more than 21,000 20,000 this level.  Where construction is used, circuits of different classifications shall be carried on opposite ends of the crossarm with a horizontal separation of not less than pin spacings required for the highest voltage concerned, but not less than 36 inches between the nearest conductors of different classification.

32.4-A1)    750-7500 Volts and More than 20,000 Volts: Supply circuits of 750-7500 volts shall not be carried on the same crossarm with circuits of more than 20,000 this level.  Where construction is used, circuits of different classifications shall be carried on opposite ends of the crossarm with a horizontal separation of not less than pin spacings required for the highest voltage concerned, but not less than 36 inches between the nearest conductors of different classification.