**
TENSILE STRENGTH CHART FOR WIRE & CABLE**

**Tensile strength is a term denoting
the greatest longitudinal tensile stress a substance can
bear without tearing apart or rupturing. PSI =
Pounds per Square Inch.**

**TENSILE STRENGTH CALCULATIONS FOR A SOLID/SINGLE
CONDUCTOR:**

**PSI = F **

(D)^{2 }x .7854

**Where: F = The breaking force of the specimen in pounds.
D = The
diameter of a solid or single strand conductor (inches)**.

PSI =

Where: F = The breaking force of the specimen in pounds.

d = The average diameter of a single strand (inches).

**TENSILE STRENGTH CALCULATIONS FOR TWO OR MORE
CONDUCTORS
IN A CABLE:**

** PSI = d ^{2 }
x 1/4PI (.7854) x number of strands x 35,000 x 90%**

**PSI = The breaking strength of the AWG in
pounds is divided by the diameter of a single strand
of wire squared, times the number of strands, times 1/4 PI (.7854), times 90% of
the resulting figure
to be used as a nominal tensile strength calculation, for safety. Than
multiply by the total number
of conductors for the total tensile strength of the finished cable.**

**Example 1: a 2 conductor 22(7/30) cable equals
.0001" x .7854 x 7 (strands) x 35,000* = 19.2423,
than take only 90% of that number for safety. ^{ }**

**Example 2: a 2 conductor 22(168/44) cable
equals .00004" x .7854 x 168(strands) x 35,000* =
18.4726, than take only 90% of that number for safety.**

^{*The PSI for annealed copper wire.}

** **