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lol, I just wanted to make sure I was understanding it correctly. I'm just getting my things together right now.

To find Ia1, 1pu/(.3+.3)  then use 1pu - Ia1*(Z1 equivalent for both).....ah okay. Not sure where I got confused.

lol. good luck to everyone. 

For line to line faults you use positive and negative sequence impedances right?My question remains, why wasn't both positive and negative sequence impedances used for both Xfmr and generator? The bus shown is on the high side of the transformer closest to the generator. 

I thought L-L faults were Ea/ Zeq?  Zeq = Z1+Z2 for both generator and xfmr. Maybe I am missing something? So, .2+.2 from Xfmr, and .1+.1 from the Gen.

So, Z1 and Z2 from Xfmr + Z1 and Z2 from the Generator? 

Would not include the Z1 and Z2 from the generator?

I agree. Look at the sample exam and see which values they used as a reference.

some verbiage might have changed. If you have the handbook, then the highlighted areas are what was added/changed.

Google what the changes are. if they are minimal, then print it out and carry it with you. 

From what the code says, plus the sum of the FLC of the other motors of the group, then I would say yes.

Good info, thanks @rg1

Hello Everyone, I wanted to know if anyone had some good links to print out for Special Applications portion? Thanks,

So for this one, the protective device can not be greater than what is calculated in 430.52. If it's for 2 or more branch circuits fed by same feeder, then use the largest. also take into account the two exceptions.  Then in 430.62 (B), it says if feeders have ampacity greater than what is...

you're welcome. Where did you see the other?

(d1+d2+....dn)^(1/n)

I think it is an error on their part. I asked about it back in September. 

I'm curious, which state is that? Most projects I've done(depending on size) require PE's to sign drawings for construction. Just recently, contractors installed panels without a revised drawing so I had to go into the panel schedules that I made for the construction documents and re-calculate...

I disagree as well. For a fully functional system in real world applications, you want to design a safe electrical system that meets the NEC and safety standards while saving money and having enough capacity to handle whatever load a client adds. Engineering isn't just creating circuits or...

NEC 430.27 says conductors must comply with 460.8 and 460.9. 460.8 says to size the conductors 135% of rated capacitor current.  So this section will have more authority than the 125% requirement just because of that capacitor.