**Original General Order
95**

**Appendix
C**

**Conductor Sags**

**(d) Sag Correction for Temperature
**

The curves, on
page277, (chart 7)
cover the correction of sags for stringing temperatures other than that
for which the sag curves were calculated. These figures cover the normal
range of stringing conditions for temperatures at time of stringing, varying
between 0 degrees F. and 130 degrees F. and for spans of from 100 feet to
1,000 feet, inclusive, in 100–foot steps, with the exception that the 150–foot
span has also been included. They represent average values for each degree
F. difference between actual stringing temperature and the temperature for
which the curves were calculated, that is 60 degrees F. The corrections for
temperatures greater than 60 degrees F. are to be added to the normal sags
while the corrections for temperatures less than 60 degrees F. are to be
subtracted. The correction for a given difference of temperature from the
base value is considered the same whether the stringing temperature is greater
or less than the base value.

The use of these corrections may be illustrated by assuming
a specific case:

**Example**

Assume -
A span of 300 feet - Heavy Loading District. Conductors
No. 0 AWG copper, medium–hard–drawn, stranded, bare.

Stringing temperature 80 degrees F.

Minimum normal sag,
page 274, (chart 4), is 5.30 feet.

Difference between stringing temperature
and normal temperature is 20 degrees F.

The ratio for sag divided by span
is 0.0177. From the curve on
page 277 chart 7, the correction per degree F. for this ratio for a span of 300 feet is 0.024
feet.

The total correction for 20 degrees
F. difference is,

20 x 0.024 = 0.48 feet

Then the corrected sag is
5.30 + 0.48 equals 5.78 feet.

If some other span than
those covered by specific curves is used, the correction may be obtained
by interpolation between curves.