When it is time for {HEAD ~ another technician} to install {TAIL ~ the tap fiber}, it is not necessary for the technician to touch any of the input optical fiber 130 that has been installed in the raceway 116 
to install
When it is time for { HEAD ~ another technician } to install { TAIL ~ the tap fiber } , it is not necessary for the technician to touch any of the input optical fiber 130 that has been installed in the raceway 116
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH