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  1. Dolphin P.E.

    Isc Current for Panel Boards / SwitchBoards / Urgent Final request??

    KAIC standard depends on the manufacturer, for example 'Square D' has10K, 14K, 18K, 22K, 25K, 35K, 42K, 65K, 100K, and 200K just for 120/208V panelboards.
  2. Dolphin P.E.

    Isc Current for Panel Boards / SwitchBoards / Urgent Final request??

    1) You haven't provide the voltage or the conduit type. Assuming the line voltage is 480V, and the wire runs in steel conduit. Short Circuit KVA for transformer = 100 / 0.02 = 5000 KVA Short Circuit for feeder = (480 * 480) / (1000 * 0.00275) = 83780 KVA (note: 0.00275 is the value of the 50ft...
  3. Dolphin P.E.

    Size conduit for 2/0 Cu rated 2400v

    Yes, there is. See NEC 310.13B, 310.13C, 310.13D, 310.13E. Let me know if it helps.
  4. Dolphin P.E.

    Voltage drop problem

    I agree.
  5. Dolphin P.E.

    Now what do you think?

    NO, you are not the only one for sure!!
  6. Dolphin P.E.

    Study Materials

    Be careful, too much details.
  7. Dolphin P.E.

    Practice Problems for the Electrical Power PE

    1. Kaplan Sample Exam, Camara's Sample exam, Camara's practice problems, Kaiser sample exam, 6 minute solutions. Problems from your reference manual. 2. I attemped to solve'm all. 3. Myself, I beleive you have to attempt to solve problems from various books, although NCEES is most important...
  8. Dolphin P.E.

    Success Strategy

    I had an educated guess on 6 problems, I managed to get 4 right. After all, I had about 5 minutes to spare in both morning and afternoon.
  9. Dolphin P.E.

    Virginia April PE result: no score sent out this year?

    Me too, just received my wall certificate today.
  10. Dolphin P.E.

    Success Strategy

    I would have chosen an 'educated guess' method instead!
  11. Dolphin P.E.

    PE Certificate

    All I got is the wallet license card. No wall certificate yet.
  12. Dolphin P.E.

    Nominal full-load speed

    I thought there is one dealing with speed regulation. Speed regulation in this case will be (1800-1725)/1725 = 4.34%
  13. Dolphin P.E.

    Nominal full-load speed

    Yes, slip value should be computed from the Sync speed 1800rpm and the Full-load speed 1725rpm which is 4.2%
  14. Dolphin P.E.

    Virginia April PE result: no score sent out this year?

    I would give it one more week.
  15. Dolphin P.E.

    Nominal full-load speed

    This is my shot for this problem, approximate Values: FLA = 75000W/4000V/1.732 = 10.8A NLA is about 30% for big motors = 3A Starting current is about 5.7 times of the FLA = 62A Nominal speed = 900- (900*.02) = 880 rpm
  16. Dolphin P.E.

    Passed, Pay Raise?

    Even without a PE licence, you still underpaid.
  17. Dolphin P.E.

    VIRGINIA RESULTS - April '11

    I thought it will take them couple weeks to update. I'm glad to see my name there, finally a PE, Thank God!
  18. Dolphin P.E.

    Power Electronics and Measurement & Instrumentation

    You are taking about the Art and Science of Protective Relaying by GE, It wasn't a great help for me. I found Blackburn book for Protective Relaying is much more useful even so I just skimmed thru it. The only thing is, the book is kind of expensive, over 100$ (I borrowed it from a colleuge)...
  19. Dolphin P.E.

    NEW YORK RESULTS - April '11

    Congrats, I think you will go with the second option now, which is celebration!
  20. Dolphin P.E.

    Passed, Pay Raise?

    PE, LEED, and REVIT, I would say 70k or more!!
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