F Drop Wire

SAG AND TENSION TABLE FOR F DROP WIRE
HEAVY ICE LOADING AREAS
SPAN
LENGTH
(Feet)
50
75
100
125
150
175
STRINGING
TENSION(LBS.)
45
45
45
60
80
80
STRINGING SAG
(Feet) (Inches)
0
2
0
4
0
8
0
9
0
10
1
1
SAG UNDER
HEAVY LOADING
(Feet) (Inches)
0
10
1
6
2
4
3
1
3
11
4
11
EXPECTED TENSION
UNDER HEAVY LOAD
(Lbs.)
234
291
341
397
452
494
NOTE: Heavy ice loading is defined under NESC Rules 250 and 251 as 0.5 inch radius thickness of ice and
4 PSF horizontal wind pressure at 0º F. Stringing tensions are at 60º F.
MEDIUM ICE LOADING AREAS
SPAN
LENGTH
(Feet)
50
75
100
125
150
175
200
STRINGING
TENSION(lBS.)
45
45
45
60
80
80
85
STRINGING SAG
(Feet) (Inches)
0
2
0
4
0
8
0
9
0
10
1
1
1
5
SAG UNDER
MEDIUM LOADING
(Feet)(Inches)
0
10
1
5
2
2
2
11
3
8
4
7
5
6
EXPECTED TENSION
UNDER MEDIUM LOAD
(Lbs.)
203
252
295
345
395
431
468
NOTE: Medium ice loading is defined under NESC Rules 250 and 251 as 0.25 inch radius thickness of ice and
4 PSF horizontal wind pressure at 15º F. Stringing tensions are at 60º F.
LIGHT LOADING AREAS
SPAN
LENGTH
(Feet)
50
75
100
125
150
175
200
STRINGING
TENSION(LBS.)
45
45
45
60
80
80
85
STRINGING SAG
(Feet)(Inches)
0
2
0
4
0
8
0
9
0
10
1
1
1
5
SAG UNDER
LIGHT LOADING
(Feet) (Inches)
0
7
1
1
1
8
2
2
2
9
3
5
4
2
EXPECTED TENSION
UNDER LIGHT LOAD
(Lbs.)
132
161
185
219
253
274
296
NOTE: Light loading is defined under NESC Rules 250 and 251 as 9 PSF horizontal wind pressure at 30º F.
and no ice. Stringing tensions are at 60º F.