80 



THE BELL SYSTEM TECHNICAL JOURNAL, JANUARY 1951 



TYPE 



NOMINAL 

 OUTSIDE 

 DIAMETER 



CENTER CONDUCTOR 0.13 

 (COPPER) 



3 SURROUND TAPES 0.160 



(0.148 X 0.0145 COPPER) 



POLYETHYLENE 0.460 



(0.150 THICK) 



6 RETURN TAPES 



CO.241 X 0.016 COPPER) 



TEREDO TAPE 



(1.750X0.003 COPPER, 



OVERLAPPED) 



RAYON TAPE 



(1.750 X 0.007) 



1 SERVING 

 CUTCHED JUTE 

 (100 LB) 



ARMOR WIRE 



(22 NO. 14 H T., 0.083 



EACH WIRE BRAIDED, 



0.107) 



2 SERVINGS 1.00 

 IMPREG. JUTE 1.12 



C17/3) 



CENTER CONDUCTOR 



(COPPER) 

 3 SURROUND TAPES 

 (0.148 X 0.0145 COPPER) 

 POLYETHYLENE 

 (0.150 THICK) 



6 RETURN TAPES 

 (0.241X0.016 COPPER) 



TEREDO TAPE 

 (1.750X0.003 COPPER, 

 OVERLAPPED) 



RAYON TAPE 

 (1.750 X 0.007) 

 2 SERVINGS 

 CUTCHED JUTE 

 (125 LB) 



ARMOR WIRE 



(11 N0.1 MILD STEEL) 



2 SERVINGS 

 IMPREG. JUTE 

 (28/3) 



CORROSION PROTECTION 

 1 WRAP 2 INCH PAPER R.H. LAY 

 1 WRAP 2 INCH PAPER L.H. LAY 

 1 WRAP 3 INCH SHEETING R.H. LAY 

 (EACH WRAP FLOODED WITH TAR) 

 EXTERIOR NON-ADHESIVE WASH 



1.630 

 1.780 



2.280 



2.430 

 2.580 



0.131 



CENTER CONDUCTOR 

 (COPPER) 



3 SURROUND TAPES 0.160 

 (0.148 X 0.0145 COPPER) 



POLYETHYLENE 0.460 



(0.150 THICK) 



6 RETURN TAPES 0.492 



(0.241X0.016 COPPER) 



TEREDO TAPE 0.501 



(1.750 X 0.003 COPPER, 



OVERLAPPED) 



2 STEEL TAPES 0.524 



(5/16 WIDE & 0.006 THICK) 



PAPER INSULATOR 0.600 



/2 WRAPS 5 MILR.H.LAYA 

 V2 WRAPS 7 MIL L.H. LAY/ 



LEAD SHEATH 0.760 



(0.08 NOM. THICKNESS) 



Fig. 11 — Cable structures. 



