In other words, an active control signal 47 turns on an isolation device to allow {HEAD ~ a potential} to be conducted from {TAIL ~ one location} to another location 
In be conducted from
In other words , an active control signal 47 turns on an isolation device to allow { HEAD ~ a potential } to be conducted from { TAIL ~ one location } to another location
REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH