Original General Order 128

Original General Order 128

Appendix B

Typicall Illustrative Diagrams of Rules

These diagrams illustrate the requirements of certain rules and are to be used as a guide only for the application of such rules. Under no conditions shall these diagrams be given precedence over the rules as written.

Figure No.	Title
1	Illustrative Diagram–Clearance and Depth Requirements for Supplyand Communications Systems
2	Typical Residential Supply and Communication System–DirectBuried or Preassembled Cables–in–Ducts
3	Typical Commercial Supply System–Cables Installed In Ducts
4	Typical Communication System–Cable Installed in Ducts
5	Cross Section–Random Separation of Buried Cable
6	Cross Section–Supply and Communication System Concurrent Installations
7	Cross Section Showing Independent Installations
8	Cross Section–Permanent Cable Trench
9	Typical Manhole
10	Separation of Supply and Communication Systems–Handholes
11	Typical Single–Phase Pad Mounted Transformer (A) Two Primary Bushings for Line-Line Connection Typical Single–Phase Pad Mounted Transformer (B) One Primary Bushings for Line to Neutral Connection
12	Typical Three–Phase Pad Mounted Transformer
13	Typical Joint Supply and Communication Pedestal
14	Typical Low Voltage Service Termination at Building (A) Typical Low Voltage Service Termination at Building (B) (Alternate to (A) for Recessed Connection Enclosure)
15	Typical Extent of Ownership Within Buildings to Which These Rules Apply
16	Grounding of Transformer Windings