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Nice. This is what I thought, that typically the neutral current is also flowing from source to the load. and since it will be negative, the actual flow will be opposite. Thank you @Zach Stone, P.E.

Thank you @Zach Stone, P.E.. Now it's clear.

@Chattaneer PE, great explanation! Quick question though, is there gonna be a way in theory(or maybe in reality) that all the phase currents(Ia,Ib,Ic) including the neutral current(In) will all be entering a common node? If yes, in what scenario?  Thanks,

Thanks @Chattaneer PE. So on this problem, the utility Y connected source is sending a current to the loads. And if the reference node is at the neutral, the 3 phase ungrounded currents are leaving the nodes and the  grounded neutral current is entering the node. Hence, entering the node =...

@Chattaneer PE, will the Neutral current displaced by 180 degrees if we use the other way around? Ia+Ib+Ic+In=0 transpose In to the right of the equation: Ia+Ib+Ic=-In  --> 180 degrees displaced

I did the same solution Based on @supra33202 's solution per your attached comment above. I just don't know why the NCEES solution have the minus neutral current. I know the problem was just asking about the magnitude, but I would also want to know if my concept is correct which is In=Ia+Ib+Ic...

How did they get the formula Ia+Ib= -In? What I know is In=Ia+Ib+Ic. And if Ic=0, should it be Ia+Ib=In, right? What am I missing here? Thank you,

Thanks for the explanation. quick question though, is the circuit power factor angle is the angle between the "source voltage" and the current? 

Why they did not consider the power factor? Rcos(theta) +jXrsin(theta)? is this because the formula above is for the effective impedance? And the problem is asking for the actual impedance? that being said, is this mean that the chapter 9 table 9 are the actual impedance values of the wires...

On problem 540, is it supposed to be just the MVA fault contribution of the generator G1 alone the one being asked? And should be just 834/0.23 =3626MVA? Or am I missing something? Could someone please explain? thank you for your help!

@MEtoEE, I have the same references as yours too. So far, I like the Glover for the protection topics, Grianger for the Transmission lines, and Wildi for the Machine. @Chattaneer PE, does the Standard Handbook for Electrical Engineers reference has plenty sample/practice problems?

@Chattaneer PE @MEtoEE, Thank you for all your responses.😊👍

@Chattaneer PE, see attached continuation from Wildi.

@Chattaneer PE, thank you for your solution. I just have a few questions though: 1. Is it the total harmonic current(including the positive and negative sequence) flowing into the neutral?  2. Should it be just the triplen harmonics(zero sequence) which is the 3rd and 9th harmonics will...

Hello, I need help for the answer, solution and explanation for this kind of Harmonic Problem. Thanks. A three-phase, four wire balanced wye-connected load is connected to a balanced three-phase four wire source. The following harmonic data is recorded: Order...

Hi, I’m looking for those 3 kinda of Books of Cram by James Flanagan . PM me, thanks

Currently studying for April 2020 Power PE exam. I started reviewing my college notes  mid October with the Graffeo as a guide. Now, I am digging the Engineering pro study guides. I study 3hrs on weekdays and 8-9hrs on weekends. I’m planning to finish all the topics first and then do the...

 Hey, I am looking for a dedicated study partner for PE Power. I'm taking the exam in Florida Area.  Good luck to us.

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