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Klein Tools NCVT-3 Non-Contact Voltage Tester with Flashlight [with Flashlight] $18.99

$18.99
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Ive been watching for a discount on one of these for a while, I figured Id share.
  • Provides non-contact detection of AC voltage
  • Detects 12 to 1000V AC with simultaneous visual and audible voltage indicators
  • Bright flashlight illuminates work area and may be used independent of voltage detection function
  • Visual LED bar graph indicates the presence of voltage - the higher the voltage sensed, or the closer to the voltage source, the more LEDs light up
  • Bar graph visual voltage indicator utilizes up to five vibrant LEDs for easy interpretation/viewing
  • Audible voltage indicator beeps at a greater frequency the higher the voltage that is sensed, or the closer to the voltage source
  • 'Auto Power-Off' conserves and extends battery life
  • Screw-thread battery cap with O-ring ensures protection against dust and water ingress

https://www.amazon.com/gp/product...UTF8&psc=1
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#2
Normal price.not the best tester testers that test under 50 volts will give you fake readings. This one reads 12 volts and up.
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Last edited by phillint March 20, 2019 at 11:59 AM.
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Quote from phillint
:
Normal price.not the best tester testers that test under 50 volts will give you fake readings. This one reads 12 volts and up.
In household wiring, I've seen phantom voltages in the 60-80 volt range as well.

If my NCVT goes off even though I think I flipped the correct breaker, I check the voltage at the wires with a multimeter. If that isn't in the 100-130 volt range, then I believe the voltage is phantom and prove it to myself by shorting the hot wire to ground. If I was right, nothing happens. If I was wrong, there are brief fireworks and the correct breaker flips off.

My final check before getting to work on any household wiring is to short to ground anyways.
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Quote from jeff34270
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In household wiring, I've seen phantom voltages in the 60-80 volt range as well.

If my NCVT goes off even though I think I flipped the correct breaker, I check the voltage at the wires with a multimeter. If that isn't in the 100-130 volt range, then I believe the voltage is phantom and prove it to myself by shorting the hot wire to ground. If I was right, nothing happens. If I was wrong, there are brief fireworks and the correct breaker flips off.

My final check before getting to work on any household wiring is to short to ground anyways.
Shorting wires is a bad plan look up arc flash injuries..it's also can cause a fire .it's bad for breakers and wiring if your tester shows voltage that's not there .buy other make
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Last edited by phillint March 20, 2019 at 12:40 PM.
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Quote from phillint
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Shorting wires is a bad plan look up arc flash injuries..it's also can cause a fire .it's bad for breakers and wiring
Better to short directly to ground than accidentally short through yourself. Besides, I'm talking about household power here, not industrial. It'd be pretty hard to hurt yourself with an arc flash at 110v.
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Quote from jeff34270
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Better to short directly to ground than accidentally short through yourself. Besides, I'm talking about household power here, not industrial. It'd be pretty hard to hurt yourself with an arc flash at 110v.
Dryers stoves s etc 240 volt
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Quote from phillint
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Dryers stoves s etc 240 volt
Those are dedicated circuits and its pretty darn easy to find the breakers for them.

I'm not shorting any high voltage wires that I think are energized, it's just a double final check before sticking my hands in there. But if electricity scares you, I recommend hiring an electrician before accidentally hurting yourself.

But be careful, I've known electricians who are too lazy to go flip a breaker and just short the circuit out on purpose with a screwdriver - I don't think the thought of dying from a practically impossible to create arc flash has even crossed their mind when working on a typical household circuit.
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#8
I've been using one of these for a couple months, and it's good for what it does. It will show "phantom voltages," but the LED indicators show a low reading (1-2 bars). I've never seen anything lower than max when testing an actual live circuit.

I have a slew of covered switch boxes in this place that aren't live. There's a bunch of wires in them (copper, thought maybe they originally had aluminum), but apparently they rewired this place at some point and replaced many of the boxes. Old boxes are about a foot higher on the wall than the new ones. It's weird.
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