Original General Order 128
Section
I
General Provisions
12.1 Construction, Reconstruction or Replacement
The requirements apply to all such systems and extensions constructed hereafter and shall become applicable also to such systems now existing, or any portion thereof, whenever they are reconstructed or replaced.
An element added to an existing underground system shall meet all requirements of these rules, but will not require any change in elements already existing.
A. Services
Services may be added to existing plant without necessitating changes in the system from which they originate.