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Test Pen Queries

Discussion in 'Electronic Basics' started by [email protected], Sep 24, 2007.

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  1. Guest

    Hi,

    I am new here and this is my first post. I need some clarifications
    regarding how electric test pen basically works. I've done googling on
    the web but can't find the informations on how it works. Hence, I come
    up with my own theory and I hope to see some feedbacks.
    What I have in mind is that, is it true that the current flows through
    the human body towards the ground when you touch the tip of your test
    pen with the bare live/hot wire. If it is so, why is the person not
    getting electrocution because I heard that a few miliamps can be
    fatal.
    That's just my thought and hopefully someone can clarify this for me.
    Apart from that, how safe is a test pen? what precaution steps need to
    be taken as I can see many technicians and engineers in the factory
    use it a lot rather than using a multimeter.

    Regards,
    M. Zhafran
     
  2. Nobody

    Nobody Guest

    Typical current is in the range of a few microamps; not enough to feel,
    let alone electrocute anyone.
    The only precaution I can think of is to ensure that it doesn't get
    covered in anything conductive; i.e. if it gets wet, dry it before use
    (just in case that wasn't blindingly obvious).
     
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