A special three-phase cable is assembled as shown in Figure 6.4 using three one-conductor cables, each with

Question:

A special three-phase cable is assembled as shown in Figure 6.4 using three one-conductor cables, each with a conductor diameter of 1 in. and an insulated outer diameter of 1.5 in. The net copper area of 20-mil-thin strands is 75% on a 1-in.-diameter base. Assuming an R_ac/R_dc ratio of 1.1, determine the cable R and X values per 1000 ft. at 50 Hz and 20°C.

Figure 6.4