Using an Electrical Meter to Troubleshoot Wiring Problems

The importance of using an electrical meter for safe wiring practices and to troubleshoot wiring problems. Have you ever replaced a fixture and can’t remembe…

25 Responses to “Using an Electrical Meter to Troubleshoot Wiring Problems”

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  1. jjlwis says:

    good stuff! stay safe Sparky!

  2. Matthew C. says:

    the fuck are you talking about you can die from 120v you must have never
    got stuck or had it go across your chest fool.

  3. Andrew Vuong says:

    😀 k cya!

  4. Mykarmaxspiredaz says:

    Great stuff Terry. I have been looking on the net for a detailed video on
    the “IDEAL Analog Multimeter Receptacle Tester”. Very few videos on this
    item. The 6 different combinations can be confusing on what they actually
    mean. Open hot, Open ground, open neutral, reversed…etc. Just a
    suggestion for a new video for you. If you could create the scenario’s and
    explain how the tester works and what it actually means…. that would be
    an awesome vid. Thanks for all your hard work!

  5. unluckyd says:

    I meant “light” fixture,”

  6. Terry Peterman says:

    This is called a “switch leg drop”. If this is a WTF moment for you, then
    you need to do some more research.

  7. modesto espinal says:

    quick q$a terry when pulling wire through a junction box to a panel if
    there are no joints just passing through do you ground that box or just
    pass through it and not ground it thanks terry

  8. ortizmacias1970 says:

    How do you test continuity if point A is 10 feet from point B? I will
    appreciate very much if you will make a video on testing it on a electrical
    box like this video thanks. By the way very nice video!

  9. Robert Weil says:

    Why did Terry use the WHITE drop wire to the switch as the hot (marked with
    black tape) and connect it to the other two blacks? Why not use the BLACK
    switch drop wire for that purpose and tie the BLACK in with the other
    blacks (power in and out wires)? Does it matter which you use? Can anybody
    answer that (Terry or somebody else)? I’m a bit confused with that part of
    this video. (My light is waiting and I don’t know how to connect it

  10. Robert Weil says:

    First, TURN OFF THE BREAKER to cut electricity to the circuit. Continuity
    is mostly used for three-way switches to find travelers (travel through the
    walls, thus the name). To test that, go to ONE of the wall switches and
    take off the cover plate and pull the switch out of the junction box and
    you’ll see the three wires. One is the common/hot (usually black and
    attached to the BLACK screw of the switch) and the other two are the
    travelers and are connected to the gold screws. You would twist together
    those two (assume they’re connected properly). Now, go to the next switch
    (which can be anywhere in the house, but is usually at the other end of the
    hallway controlling the same light as the first switch) and take apart all
    the three wires. (If wired correctly, the BLACK screw will have the
    common/hot wire running to the light or from the circuit box, the gold
    screw wires will be the travelers, but it can get messed up as it did in my
    house.) One will be the hot/common, the other two are the other ends of the
    travelers from the first switch that you twisted together. But make believe
    you don’t know which is which. With your multimeter set to the HORN icon
    (which beeps when continuity is found), touch two wires at a time with the
    ends of the multimeter probe. There are only three combinations to test.
    When you get a beep, those two you’re touching are the travelers and the
    remaining wire is the hot/common. Attach that third wire to the BLACK
    screw, and the other two to the GOLD screws (doesn’t matter which of the
    two wires goes to which gold screw, they’re interchangeable; just don’t put
    a traveler to the BLACK screw). That’s how I test for continuity with my


    i am buying a multimeter FLUKE,, what will be the best for my money to
    purchase,, CLAMP OR MULTIMETER? anyone which one would you recommend ? i am
    pursuing a career as an ELECTRICIAN,,, fluke have lots of models? but i am
    undecided which one will be worth it.. for the kind of work for me… i
    would like a clamp to measure on a electrical panel, but also i like those
    multimeter?suggestions please? and i would like to spend around $200dls or
    less,,,,,,thank you and TERRY THANKS FOR THIS GREAT VIDEO,,, its worth
    watching it.. very interesting and useful

  12. Troy T Dinh says:

    Many thanks!!

  13. Troy T Dinh says:

    I just bought a mutimeter Mastech8268 and I am working on fire panel low
    voltage. Do you think this meter is good enough since the Fluke is way too

  14. Josh Nuno says:

    good tutorial

  15. lesmoor1 says:

    Thank you so much for this video. It was exactly what I needed.

  16. addrian reyes says:

    basic home wiring 2010 is a great tutorial for those that want to see how
    it all works basically.

  17. Crystal Gorham says:
  18. Cath H. says:

    I’ve installed lots of new light fixtures in my house, but never knew any
    of this. I just make sure I take pictures and switch one wire at a time.
    Now I’ll be playing with my meter because you explained how so well.
    Thank you!

  19. tarita virtue says:

    outstanding educational video!!! you are thorough and do a fabulous job of
    really explaining circuits to novices! i have a meter; however, with so
    many lower priced tools – made in China – there was no
    instructional manual and the info on the package was poorly written and was
    of no help whatsoever! to supplement this problem i purchased several books
    on wiring, and even though they all mention the significance of white wires
    marked with black tape, nothing compares to actually watching a pro take
    the time to dissect circuits! if i found your video years ago i would have
    saved myself endless sweat equity cursing sessions! ((many many thanks to
    you Sir!!))

  20. Eddie Heaston says:

    Thanks for posting this!! I watched the video , followed the instructions
    and saved myself some bucks!!

  21. wizardsworld7 says:

    Why can’t you just use a tick tester?

  22. vernon whiting says:

    Great video. Hoping you can help I can’t get my light in the shed to work.
    I have tested the breaker switch and fixture and have 120 at all of these
    points. Pulled the contact up in the fixture just in case. I am pulling my
    hair out. Any suggestions 

  23. Dan Baught says:

    Robert Weil. I also asked his question re: re identifying UNGROUNDED
    conductors. NEC 2014 200.7 (C) (1) states that if used for single pole, 3
    way or 4 way switch loops, the re identified conductor with the white or
    gray insulation or three continuous white or gray stripes SHALL be used
    only for the SUPPLY to the switch, but not as a return conductor from the
    switch to the outlet. 

  24. How to DIY with Sammy Bones says:

    Nice video. Keep up the good work!!!
    Have a great day!
    #electrical #diy 

  25. Simon Valdes says:

    Very good video, it looks easy when it can see on a practice table. In the
    reality is easy after see and understanding the basic principle of the
    electricity and the measure exposed in this video.