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Shouldn't it e 13.2KV or am I missing something? Also, it might be helpful to add letters so it's easer to understand what voltages are shown in the graph.

You will use over 1000V for primary and 1000V or less for secondary. In your example (assuming any location and Z<6%) Primary: Fuse would be rated at 300% of FLA or next higher standard size Circuit Breaker would be rated at 600% of FLA or next higher standard size Secondary: Fuse would...

@Zach Stone, P.E. would you be kind and chime in why would you use Rc for the vaule GMRc? The handbook states "GMRc is calculated the same way as GMR with the virtual radius rl replaced with the subconductor's radius r."

@akyip Thank you so much for posting your work. I did everything exactly the same. However, I did not substitute GMRc for rc. How did you know that GMRc is actually rc?  When reading the handbook ti says GMRc is calculated the same way as GMR with the virtual radius rl replaced with the...

That's a bummer. Thanks for the response!

For those of you who took test, were you able to jump pages (i.e. type page 500)? I have photographic memory and I typically remember page numbers.

I don't think that fuses are consider to be sensing devices. Regrading the protective relays, I don't think that they are consider tripping devices. The Relay does not break the contact it just senses the error and send the signal to the circuit breaker.

I am trying to solve all of the problems in the practice exam using only reference book. However, I cannot solve this one. I know that problem gives us the formula to use for line to ground capacitance and then we use that to convert it to capacitive reactance. I was wondering if we can...

@Zach Stone, P.E. Your article saved me so much time and trouble (and hair). Thank you for making it accessible to public!

Yeah that make sense. I am actually just reading that chapter lol. Reviewing the inrush and saturation.

I am getting ready to start second review of per unit type of problems.  So I was wondering, other then fault current what type of problems do you expect to be solving in the exam using per unit method?

I see a fair amount of corner grounded delta in the old buildings. The biggest benefit is that you make other two phases very stable. One thing to note tho is that one shouldn't assume that you can simply connect neutral to the grounded corner to get lower voltage i.e. to get 120 from 240. ...

My biggest question here is what is happening to the neutral on wye side. You grounded one point (the neutral) from the WYE and a different point (B phase) at the load, which created a direct B-to-N short ? Btw, @akyip I agree with you that Vag=13.2

That's all that was given. 

Those of you who passed, Congrats!!! I wanted to ask you, what have you read/studied/watched to cover Protective Relays part?

Hi everyone, I hope someone can help me solve this problem: Tests are performed on a single-phase, 10 kVA, 2200/220 V, 60 Hz transformer with the following results are obtained for a fixed load of 3.41A at rated output voltage. The load is is a lagging pf load. Determine the voltage regulation...

This one came from one of my coworker's notes. I believe that he got from School of PE class but he doesn't remember since it was a while ago. I think you can find similar problems in complex imaginary and electric machinery and power system fundamentals.

I am such a doughnut, I forgot to divide 19 kV with sqrt(3). Hopefully won't make same mistake in the exam.

Hi, I was wondering is someone can help with this problem? A three-phase steam turbine generator rated at 722 MVA, 3600 rpm, 19 kV, has a synchronous reactance of 0.65 Ohm. Eo, the excitation voltage is adjusted to be 13.16 kV. The machine is connected to an infinite bus of 19 kV. If the torque...

Thanks for the post. I remember one from Zach's practice test but that one (if I recall correctly) had nothing to do with the power factor. Unfortunately I do not have Energy Pro Guides exam.