d) The length of lay of the strands in both layers of a 19-wire combination round-wire unilay-stranded copper or aluminum conductor shall be 8 – 16 times the outside diameter of thecompleted conductor. Otherwise, the length of lay of the strands in every layer of a concentric-lay-stranded conductor consisting of fewer than 37 strands shall be 8 – 16 times the outsidediameter of the conductor.e) The length of lay of the strands in the outer two layers of a concentric-lay-strandedconductor consisting of 37 or more strands shall be 8 – 16 times the outside diameter of theconductor.f) The length of lay of the members or ropes in the outer layer of a rope-lay-stranded conductorshall be 8 – 16 times the outside diameter of that layer.