Again, the three-wire system could be single phase, 2-alt;ta#39;, or 3-alt;Ap. If N becomes four as in a 4-# system, then three wattmeters are required. In contrast to the N method, one wattmeter in the two-wattmeter method of Figure 11-196 will readanbsp;...
|Title||:||Introduction to electrical circuit analysis|
|Author||:||Robert C. Carter|