In a three wire configuration, an additional neutral point is formed by coupling together {TAIL ~ another set} of {HEAD ~ three resistors} 
In a three wire configuration , an additional neutral point is formed by coupling together { TAIL ~ another set } of { HEAD ~ three resistors }
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