resistant materials such as quartz furthermore the holding member 4 could also be gel filled for to block water 0042 fig1 b depicts a schematic cross section of a core 11 of an electrical cable which is formed from reinforcing strands 13 and conductive strands 12 several holding members 14 14 1 14 2 and 14 3 are located in the interstices 15 15 1 15 2 and 15 3 of the core 11 0043 fig1 c depicts a cross section of a core 21 of a u201c bluejay u201d style of a cable having conducting strands 22 forming an outer periphery of the core 21 and reinforcing strands 23 located near the center of the core 21 for example the center of the core 21 can be formed from six reinforcing strands 23 and one holding member 24 containing an optic fiber 26 the holding member 24 may have approximately the same diameter as the individual reinforcing strands 23 which enables the holding member 24 to replace at least one of the reinforcing strands 23 in the core 21 of the cable without causing any structural deformities the illustrated embodiment does not suffer from ampacity loss while only having approximately 5 strength loss the location for temperature monitoring is good but the location of the holding member 24 causes termination to be difficult.