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What are the hardest questions on the level 4?

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    What are the hardest questions on the level 4?

    what was the hardest question you seen while taking the 4? thnx for taking time to help out!
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    Hardest Question?

    What three leads are on a Megger?

    Earth, Guard, Positive or Negative.

    I got this one wrong and did massive research. Pick Three

    P.I. of 1.4, Do you continue?

    The ones you think are easy are worded to make you think or over think.
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    Level 4 Question?

    Electro Mechanical Relay Protection is set at a value of .2 (200ms) of one another. Is this acceptable? Oh by the way, these are critical loads.
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    Quote Originally Posted by Test Tech from DMV View Post
    What three leads are on a Megger?

    Earth, Guard, Positive or Negative.

    I got this one wrong and did massive research. Pick Three
    positive, negative and guard? seems too easy I am sure there is a catch. what did you come up with in your research?
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  8. #5
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    Quote Originally Posted by Test Tech from DMV View Post
    P.I. of 1.4, Do you continue?

    is this how the question was worded? looks like a motor question maybe? a PI of 1.4 usually indicates dirt and moisture in a motor winding but I have also read that VPI and pressed-coil insulation systems may yield a PI between 1 and 2 for a perfectly good winding.
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