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When calculating the effective impedance when we would we use Chapter 9 Table 9 Note 2: Ze = R x PF + XLsin[arccos(PF)] rather than just using the R and XL values from the table in the following formula: Z = (distance) * (R+jXL) Most of my practice problems don't use the Note 2 equation at all...

When a motor is directly connected to generator terminals, does that mean that the motor and generator are parallel?  I would've thought they would be in series.

The solution to this problem calls out to use 210.19(A)(1) to get the total load and then to use 310.15(B) Informational Note No 2 -> Table 310.15(B)(16) -> 240.4(D) Can I instead assume that using 210.20(A) to get the total load and then going straight to Table 240.6(A) to find that the...

The solution to this question notes that "Since the source is ungrounded, the phase-to-phase voltage is the line voltage". Does this mean that if there was a neutral you can't assume the phase-to-phase voltage is the line voltage?  I have been treating phase-to-phase voltage as line voltage...