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electric tester DIY

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Uploaded by on Jan 22, 2010

Bob Schmidt shows you a great tool to have when starting a home renovation project. An electric tester can help prevent accidental electric shock when working with electric. It is how to find out if a wire is hot and help determine the circuit in the electric panel to shut off. abandoned wires are very difficult to determine and junction boxes sometimes have more than one circuit going through them so it is very important during disconnect to know the wires that are live, How to know if electric wire is hot active? how to shut off correct circuit breaker. Electric wire just hanging in wall not connected to anything. plug wire connected to switch ? how to tell if a wire is hot or not? DIY

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  • There is one little gotcha with these testers. Say you have tested the wire found it hot. You turn the breaker off. You test again and it says it is still hot. What?! You could have another wire running next to the one you are testing that is still hot. The magnetic field that is part of current flow transfers from the hot wire and is picked up by the wire you are testing and shows a false positive.  This is where you need another tester whose probes physically touch wires to show voltage.

  • this tool saved my life today!

    I was working on a recept, and saw and old hot tie in... figured that it was dead because i turned off the CB... but i probed it with my volt light.. and wouldn't you know it was hot. thank goodness for that volt light!

  • also good for testing if your GFCI is still working properly. not too many people check monthly as it says on the outlet...

  • am the 5000 view !

  • Great tips from you ..love all of them...

  • thanks so much for the vids. i am starting a small gc company in tennessee and this is so helpful. although i have 3 years experience, this vids help me remember the basics. keep posting bob, thanks.

  • Good job. Bob.

  • thanks bob please keep posting.

  • Yaaaaay! It's Bob! More videos Bob! We love Bob videos. Yaaaaaay!

  • @AeroJimE27

    Good story, and you were wise to use insulated cutters.

    The worse to happen to me, is getting shocked by a shorted outlet.

    I was alert before when doing electrical work for myself, but now 100X more.

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