94 



BELL SYSTEM TECHNICAL JOURNAL 



CENTRAL 

 OFFICE 



— B- 



APPROXIMATE 

 SCALE IN FEET 



TYPICAL 



POLE-HEAD 



CONFIGURATION 



15 15 



LOCATION 

 B 



X 



LOCATION 

 A 



AERIAL TO 



UNDERGROUND 



POLE 



TO 



SUBSTATION 



15 



4 15 

 • 10 



I5u 



SECTIONS 

 A-B 



— LEGEND — 



E 3- PHASE PORTIONS 

 OF FEEDERS 



: 2 -PHASE PORTIONS 

 OF FEEDERS 



- I -PHASE PORTIONS 

 UNDERGROUND TELE 



PHONE CABLE 



AERIAL TELEPHONE 



CABLE 



•J\f\« "drop" WIRE TO SUB- 

 SCRIBER'S STATION 

 — • SERVICE TRANSFORM- 

 ER— KVA AS INDICATED 



ALL SECTIONS ASSUMED AT 

 JOINT-USE SEPARATIONS — 

 SEE TYPICAL POLE-HEAD 

 CONFIGURATION ABOVE 



^ 



3-100 KVA 



f4PER 



, .CENT)YA 



• 10 



rx 



LOCATION 

 C 



Fig. 3 — Example of possible arrangement of feeder layout in an urban area where 

 long aerial telephone cable is exposed to a heavily loaded one-phase feeder. 



