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NETA III Test Feb 2020

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  1. clipboardwarrior's Avatar
    clipboardwarrior is offline Junior Member Pro Subscriber
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    Quote Originally Posted by SecondGen View Post
    Do you remember if "high transient currents" was an option?
    I don't. I remembered as much as I could, but I was so stressed out. I'm surprised I remembered as much as I did.

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    help me out on this one

    What is the benefit of a synchronous motor?

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  5. gchoquette is offline Junior Member Pro Subscriber
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    Quote Originally Posted by clipboardwarrior View Post
    Where do you bond the neutral to ground in service switchgear: before or after the neutral disconnect link?

    What would happen if you were to place the ground fault relay ahead of the N-G bond?
    According to Figure 1 and Figure 2 in the link below, the bond would be before the neutral disconnect.

    The ground fault relay CT is also before the neutral disconnect (Figure 1), but a zero sequence CT (combining all phases) is placed after the neutral disconnect (Figure 2).

    In response to the question, the N-G bond is solid and at the bottom of the service switchgear. It would be difficult to place the relay CT before (from ground as the reference), the CT is normally after (unless you are using a different frame of reference).

    https://electrical-engineering-porta...-ground-faults

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  7. Warrengarber's Avatar
    Warrengarber is offline
    If you ignore it, it will fail.
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    High Harmonic Loads Causing Power Loss

    One of the other members posted some questions that he remembered from his exam. One of the questions was
    "You're troubleshooting in a building with a lot of high harmonic loads. They've been losing power. What is the most likely cause? (Sorry, I can't remember all of the symptoms.)"

    I know that high harmonics are seen on the Neutral so would that be an answer? Could cause problems with neutral sensors or ground fault tripping. Any thoughts. My exam is at the end of next month so I am getting ready again.
    Warren Garber
    Have a great day!

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