Tree Cabling secures split limbs together. There are several reasons that may cause splitting of limbs or tree trunk like wind storms, heavy extending branches, split crotches.
Tree Cabling can prevent the tree from splitting.

Reasons for tree cabling – to support weak crotches in trees, to prevent heavy swaying in storms.

Note: Reducing weight by trimming before cabling is recommended. Followup trimming is required to maintain cabling viability