Appendix > Cable Pulling Calculations > Maximum Allowable Pulling Tension with a Basket Weave Grip 
Version: 10.1 
The equations below calculate the maximum pulling tension if a basketweave grip is used.
PILC Cable: 
ALS = p t (d  t) T_{max} = 2000 x ALS 
Where: 
ALS = Area of lead sheath (in) T_{max} = Maximum pulling tension (lb) t = Thickness of lead sheath (in) d = Outside diameter of lead sheath (in) 
Solid Dielectric Cables: 
T_{max} = 2000 lb (600V, each) T_{max} = 4000 lb (Primary, each)  OR  T_{max} from the Maximum Pulling Tension Using Pulling Eye table. Compare; choose the lower T_{max} 
Tension on a Single Cable
On a single cable pull, the basketweave grip grips the entire circumference of the cable equally and transfers the force to the center of the cable. The maximim tension can be exerted on one cable.
Tension on Multiple Cables
On multiple cable pulls (more than one cable in a single grip) the entire grip does not tighten over all the cable as effectively as it does on a single cable. Therefore, there is an unequal distribution of the force on the cables. The equations for determining the maximum pulling tension for multiple cable pulls are:
Tension Distributed on Cables
If multiple cables pulls are: 
Follow table number: 

Same size, parallel lay (not triplex or quadruplex) 
1 
Different sizes caused by including a separate neutral of a smaller size than the phase conductor 
2 
Triplex or quadruplex 
3 
Table 1: Tension on Same Size Cables, Parallel Lay
Number of Cables 
Equation 

2 
TT_{max} = T_{max} x 1.5 
3 
TT_{max} = T_{max} x 2.0 
4 
TT_{max} = T_{max} x 3.0 
Where: 
TT_{max} = Total maximum pulling tension T_{max} = Maximum pulling tension/phase conductor 
Table 2: Tension on Multiple Cables with Separate Neutrals
If: 
And: 
Then Use Equation: 

In a three cable pull where the neutral is the third cable 
The neutral is the same size or one stock size less than the phase conductor 
TT_{max} = T_{max} x 2.0 
The neutral is more than one stock size less than the phase conductor or bare 
TT_{max} = T_{max} x 1.5 

In a four cable pull where the neutral is the fourth cable 
The neutral is the same size or one stock size less than the phase conductor 
TT_{max} = T_{max} x 3.0 
The neutral is more than one stock size less than the phase conductor or bare 
TT_{max} = T_{max} x 2.0 
Table 3: Tension on Triplex and Quadruplex Cables
Number of Cables 
Equation 

Triplex 
TT_{max} = (T_{max} x 2.0) + NT_{max} 
Quadruplex 
TT_{max} = T_{max} x 3.0) + NT_{max} 
Where: 
TT_{max} = Total maximum pulling tension T_{max} = Maximum pulling tension/phase conductor NT_{max} = Maximum pulling tension/neutral conductor 