Ask Experts Questions for FREE Help !
Ask
    funjyb's Avatar
    funjyb Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 6, 2013, 05:38 PM
    What does it mean when a voltage tester lit up red in both outlet slots?
    A light stopped working in a room. I checked both the fixture wires and switch wires for a current with a NCVT-1 voltage tester. Neither one shows a current. So I also checked the outlets in same room and my tester flashed red in both outlet slots. What does that mean?
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #2

    Jan 6, 2013, 06:07 PM
    The NCVT-1 stands for "Non Contact Votage Tester, with 1(one) probe"

    What it means is that if the tester probe is on, it will sense the voltage just by touching the probe to one insulated conductor of a cable or sticking it into the short slot of a receptacle.

    Not knowing which model you have, a whie or green light lets you know that the device is "ON" and working. The "RED" LED indicates the presence of voltage where the probe is touching.

    For example, if you insert the tip of the probe into the small slot of a receptacle and you do not get a tone or a Red LED, then there uis no voltage present on that conductor. If it glows red and beeps the conductpr is hot.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Furnace won't stay lit flame sensor new works with tester on the common screw to groun [ 2 Answers ]

Furnace only stays lit for about 3 sec ,replaced flame sensor, and have checked all grounding. While testing my thermostat connections. I found that everything works fine with my volt meter touching the c terminal and ground does anybody know what the problem could be

KNOPP voltage tester vs. Yellow wire/red with light at end [ 8 Answers ]

I need to change 2 different motion detector lights. I live in a 1977 mobilehome, and know how to turn off the breaker boxes. My problem is I want to make sure the power is really off so I don't get zapped. I have the Knopp voltage tester and the other ? Yellow/red wires with some sort of light...

Outlet voltage? [ 1 Answers ]

I installed a tile backsplash in my kitchen in August and I needed to add outlet box extenders to accommodate the extra tile width. I was checking the voltage on the end of the line plug in the three outlet circuit with a tester and I touched a black wire to the side of the box and it sparked and...

Voltage tester gives false positive reads when line is not hot [ 3 Answers ]

Pro did my rough in. I'm installing outlets, switches, etc Using $20 no contact voltage tester - with plastic tip that beeps/lights when line is hot. I get beep/light even if line is absolutely, definitely dead? For example: 12/3 wire direct from panel to switch box Nothing between panel...

View more questions Search