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Original General Order 95 

 

Appendix C

 

Conductor Sags

 

 

Table 25:    Stringing Sags, In Inches, for Communication Conductors In Grade F Construction

Span Length, Feet

Light Loading

Heavy Loading *

Temperature, Degrees Fahrenheit

Temperature, Degrees Fahrenheit

100

80

60

40

20

100

80

60

40

20

0

100

7

6

4.5

4

3.5

9.5

7.5

6

5

4

3.5

120

10.5

8.5

7

5.5

5

13.5

10.5

8.5

7

5.5

4.5

140

14

11

9

7.5

6.5

18.5

14.5

11.5

9.5

7.5

6.5

160

18

15

12

10

8.5

21

18

15

12.5

10.5

9

180

22

18.5

15.5

13

11

26.5

23

19

15.5

13

11

200

27

23

19

16.5

13.5

-

-

-

-

-

-

220

32.5

27.5

23

20

16.5

-

-

-

-

-

-

240

36

31.5

27

23.5

20.5

-

-

-

-

-

-

260

42

37

32

27.5

24

-

-

-

-

-

-

280

49

42.5

37

32

27.5

-

-

-

-

-

-

300

56

49

42.5

36.5

32

-

-

-

-

-

-

*    In heavy loading districts, sags of the given values are inadequate for the following conductors and must be increased to meet the safety factor requirements:

 

Hard–drawn copper,, No. 12 AWG in spans greater than 130 feet.

Galvanized iron, EBB, No. 9 BWG in spans greater than 170 feet.

Galvanized iron, EBB, No 10 BWG in spans greater than 140 feet.

Galvanized iron, EBB, No. 12 and No 14 BWG in spans of any length.

Galvanized iron BB, No. 10 BWG in spans greater than 170 feet.

Galvanized iron, BB, No. 12 BWG in spans greater than 115 feet.

Galvanized iron, BB, No. 14 BWG in spans of any length.