Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old November 17th 05, 07:39 PM posted to sci.electronics.repair
hk538
 
Posts: n/a
Default Kinda off topic...House electrical issue?

I've noticed during moving one of the wall receptacles, that when the
breaker for that circuit is shut off, I'm still showing 17-19vac on my
meter. Not exactly sure as to why I'm still showing ac on a circuit
that is supposed to be dead. I've checked a few others with the circuit
breaker off and they too are showing 17-19 vac. The only thing I can
figure is maybe some stray inductance or some sort of system ground
problem. I've checked the breakers and everything seems to be fine. 200
amp main with breakers is less than a year old and I've always heard
square-D is good stuff. Not sure....Any ideas?

Thanks,
GW


  #2   Report Post  
Old November 21st 05, 09:48 AM posted to sci.electronics.repair
Dave Plowman (News)
 
Posts: n/a
Default Kinda off topic...House electrical issue?

In article .com,
hk538 wrote:
I've noticed during moving one of the wall receptacles, that when the
breaker for that circuit is shut off, I'm still showing 17-19vac on my
meter. Not exactly sure as to why I'm still showing ac on a circuit
that is supposed to be dead. I've checked a few others with the circuit
breaker off and they too are showing 17-19 vac. The only thing I can
figure is maybe some stray inductance or some sort of system ground
problem. I've checked the breakers and everything seems to be fine. 200
amp main with breakers is less than a year old and I've always heard
square-D is good stuff. Not sure....Any ideas?


Modern high impedance input DVMs are a bit of a pain for measuring
household wiring. An old analogue meter with about 1000 ohms per volt is
much more use.

--
*How come you never hear about gruntled employees? *

Dave Plowman London SW
To e-mail, change noise into sound.
  #3   Report Post  
Old November 22nd 05, 01:14 AM posted to sci.electronics.repair
Arfa Daily
 
Posts: n/a
Default Kinda off topic...House electrical issue?


"Dave Plowman (News)" wrote in message
...
In article .com,
hk538 wrote:
I've noticed during moving one of the wall receptacles, that when the
breaker for that circuit is shut off, I'm still showing 17-19vac on my
meter. Not exactly sure as to why I'm still showing ac on a circuit
that is supposed to be dead. I've checked a few others with the circuit
breaker off and they too are showing 17-19 vac. The only thing I can
figure is maybe some stray inductance or some sort of system ground
problem. I've checked the breakers and everything seems to be fine. 200
amp main with breakers is less than a year old and I've always heard
square-D is good stuff. Not sure....Any ideas?


Modern high impedance input DVMs are a bit of a pain for measuring
household wiring. An old analogue meter with about 1000 ohms per volt is
much more use.

--
*How come you never hear about gruntled employees? *

Dave Plowman London SW
To e-mail, change noise into sound.


Leakage current in home wiring is often due to the presence of power factor
correction capacitors in older flourescent light fixtures, and is quite
normal

Arfa


  #4   Report Post  
Old November 22nd 05, 10:15 AM posted to sci.electronics.repair
Dave Plowman (News)
 
Posts: n/a
Default Kinda off topic...House electrical issue?

In article ,
Arfa Daily wrote:
Modern high impedance input DVMs are a bit of a pain for measuring
household wiring. An old analogue meter with about 1000 ohms per volt
is much more use.


Leakage current in home wiring is often due to the presence of power
factor correction capacitors in older flourescent light fixtures, and
is quite normal.


And with most SMPS. However, I was meaning testing with no load. UK house
wiring is Twin and Earth - all enclosed within a sheath. This is a good
system to keep external fields to a minimum, but allows a degree of
capacitive coupling which with a high impedance volt meter gives very
misleading results.

--
*Can atheists get insurance for acts of God? *

Dave Plowman London SW
To e-mail, change noise into sound.


Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Looking at Houses To Buy, What To Look For? phaeton Home Repair 34 October 25th 05 04:58 AM
House Building Secrets markmcc Home Ownership 2 March 12th 05 05:08 PM
Am I getting Scammed.. ROYALLY? Putting an offer on a house [email protected] Home Ownership 25 March 6th 05 03:05 AM
Slightly off topic: Question, Wood magazine, #1 issue. Cut it or leave it alo Glenna Rose Woodworking 8 January 15th 05 10:16 PM
Contacting contractor to buy our house? (Long) Cina Home Ownership 4 March 4th 04 04:31 AM


All times are GMT +1. The time now is 04:09 PM.

Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"

 

Copyright © 2017