Customer Resources > Stranded Conductor Configurations

Below are descriptions and illustrations of the different kinds of stranded conductor configurations.

Unilay Stranding:

Stranded conductor composed of a central wire
that is surrounded by one or more layers of
helically laid wires that have the same
direction of lay and the same lay length
each successive layer.

Unilay Stranding

 

 

 


 

 

 

Conventional Concentric Stranding:

Stranded conductor composed of a central
wire that is surrounded byone or more layers of
helically laid wires that reverse the direction of
lay and increase they lay length for each
successive layer.

Conventional Concentric Stranding

 

 

 

 


 

 

 

Unidirectional Concentric Stranding:

Stranded conductor composed of a central wire
that is surrounded byone or more layers of
helically laidwires that have the same direction
of lay and an increasinglength of lay for each
successive layer.

Unidirectional Concentric Stranding

 

 

 

 


 

 

 

Bunch Stranding:

Stranded conductor composed of any number
of wires of the same diameter that are twisted
together without regard to the geometric pattern
of the individual strands. Common bunch
configuations have 10, 16, 26, 41, 65, and 105
strands.

Bunch Stranding

 

 

 

 


 

 

 

Definitions:

Length of Lay - Distance measurement of axial length of one turn of helix,
which is usually expressed in inches and a function of the number of twist per foot.

Direction of Lay - The lateral direction in which the strands will run over the
top as they recede from the observer looking along the axis of the conductor.
Typically specified as left or right hand lay with left being the most common direction.


 

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