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