Low voltage shows with circuit off


  #1  
Old 08-26-19, 10:08 AM
H
Member
Thread Starter
Join Date: Aug 2019
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Low voltage shows with circuit off

In a standard House in U.S.A. I've shut off circuit breaker at wall panel, however when I connect a good (Klein) multi-meter to black and neutral wires I see a low voltage of .426. (read as point four two six).

What does it indicate to get that low voltage reading when circuit is off?
 
  #2  
Old 08-26-19, 10:12 AM
J
Member
Join Date: Sep 2002
Location: welland ontario
Posts: 8,341
Received 462 Likes on 382 Posts
Take that reading as zero.
 
  #3  
Old 08-26-19, 09:08 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 70,921
Received 3,162 Likes on 2,841 Posts
Welcome to the forums.

Just to add to joed's reply. Yes.... that is considered 0 volts. When using a sensitive voltmeter you can pick up residual voltage induced from a near by live wire. You could see anywhere from what you've measured up to half the line voltage. If you put a small load on those two wires you would measure 0 volts. A small 120v light bulb makes a good load.
 
  #4  
Old 08-27-19, 05:47 AM
N
Member
Join Date: Jan 2012
Location: Canada
Posts: 2,743
Received 20 Likes on 18 Posts
As the others mentioned, consider it zero.
If you notice with your meter, you can wave the probes in the air and pick up some AC voltage.
On house hold wiring, I'd consider anything under 3VAC as 0.
The lines as they come into the box will pick up from other wires near by and if they are ran along with other powered wires, a bit more. I've seen some runs over the 3 wire per hole max which would generate as much as 5+ VAC.
 
  #5  
Old 08-27-19, 08:15 AM
H
Member
Thread Starter
Join Date: Aug 2019
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Thank you Joed, PJmax and Northern Mike for excellent and full input,
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: