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    kumar1957's Avatar
    kumar1957 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 21, 2012, 03:16 AM
    Electrical
    What is the working principle of a pen tester. The voltage is present in three phases but the pen tester is not giving indication in one phase . Why?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Mar 21, 2012, 04:04 AM
    Please put more than just "electrical" in the title. It gets hard to figure which thread is which.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #3

    Mar 21, 2012, 04:40 AM
    Here is description of a proximity (pen) tester:

    http://www.elect.com.au/Attachments/...ityTesters.pdf

    Use one only to detect the presence of voltage.

    Do not use one to perform troubleshooting.
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