DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Electrical (http://www.diychatroom.com/f18/)
-   -   Non-contact volt tester beeps before insertion (http://www.diychatroom.com/f18/non-contact-volt-tester-beeps-before-insertion-149831/)

Cossack 07-10-2012 06:37 PM

Non-contact volt tester beeps before insertion
 
I frequently use a non-contact voltage tester wand to quickly tell me if an outlet has power. Usually I have to slide it in a slot to get a reading. On one of my rental properties I used it on some upstairs outlets, and it started beeping and the light came on when I was about 1 inch away from the outlets. In the downstairs outlets I have to slide it in as usual to get a reading. Does this mean anything?

I used a volt meter, and the upstairs outlets read 114 to 115.

Cossack 07-12-2012 04:48 PM

There are no replies so can I assume it does not mean anything? This is the first time I have seen this happen, and it ONLY occurs in the upstairs of this particular house.

TarheelTerp 07-12-2012 04:56 PM

Quote:

Originally Posted by Cossack (Post 964185)
There are no replies so can I assume it does not mean anything?

NCVT range between problematic ---> unreliable ---> useless
If you don't already have a plug in polarity tester... get one.

mpoulton 07-12-2012 05:39 PM

Quote:

Originally Posted by Cossack (Post 964185)
There are no replies so can I assume it does not mean anything? This is the first time I have seen this happen, and it ONLY occurs in the upstairs of this particular house.

Totally normal behavior.

jbfan 07-12-2012 06:50 PM

You can make one beep by rubbing up and down your sleeve.

andrew79 07-12-2012 06:55 PM

mine goes off randomly in my pants pocket while i walk at work :laughing:

jbfan 07-12-2012 06:59 PM

Quote:

Originally Posted by andrew79 (Post 964279)
mine goes off randomly in my pants pocket while i walk at work :laughing:

Bragging or complaining???:whistling2:

andrew79 07-12-2012 07:01 PM

both :thumbup:

bobelectric 07-12-2012 09:46 PM

Hold your idex finger on the tip of tester to see if that makes it quit .

Cossack 07-13-2012 10:07 PM

I have used this wand for a long time in many houses and it ONLY happens in this house in the upstairs room.

Missouri Bound 07-13-2012 10:46 PM

Non contact testers are prone to go off for no reason at all. Use a plug in tester for outlets, a wiggy for other testing. Non contact are not useless...they tell you there is power....somewhere.:laughing:

jlmran 07-13-2012 11:39 PM

"Useless" might be a little harsh. If anything they are overly sensitive...which means if you can't get it to beep, chances are the nearest voltage is 1/2 mile away. Yet, voltage (or lack of) should be verified with something more precise if the work involves handling potentially energized components.

andrew79 07-13-2012 11:46 PM

they are particularly "not usefull" for testing unbalanced loads on neutrals. probably why most shocks come off the neutral.

jlmran 07-14-2012 12:35 AM

Quote:

Originally Posted by andrew79
they are particularly "not usefull" for testing unbalanced loads on neutrals. probably why most shocks come off the neutral.

I thought the neutral conductor was used "after" the load?

McSteve 07-14-2012 12:37 AM

Just for S&G, you might want to check that particular outlet for a hot ground, or energized metal box. I've seen exactly what you're talking about in a house that had some outlets wired with a bootleg ground and reversed polarity. On the normal outlets, I'd have to get the probe at least *near* the hot slot on the receptacle to get a beep. On the outlets with electrified grounds, the beeper would go off anywhere near the receptacle.

Always verify strange readings with a voltmeter, using an extension cord plugged into a known good outlet as a reference point if necessary.


All times are GMT -5. The time now is 08:30 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved