Tab 140 is in electrical contact with a neutral source line 146 and tab 142 is in {TAIL ~ electrical contact} with {HEAD ~ a load source line} 148  
Tab 140 is in electrical contact with a neutral source line 146 and tab 142 is in { TAIL ~ electrical contact } with { HEAD ~ a load source line } 148
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH