Dimming Lights In House

 
Thread Tools Search this Thread Display Modes
Old 01-02-2004, 02:41 PM   #1
Guest
Guest
 
Unregistered's Avatar
 
Posts: n/a

Dimming Lights In House


I'm having a problem in my home with lights dimming. I have checked the ground connection to the cold water system, main panel for loose connections, meter socket for loose connections. I was unable to check the ground connection at the rod outside because its buried too deep. I performed a test using a 1250 watt hair dryer to put a load on a branch circuit that was on phase A. The voltage without the hair dryer on was 121.3, when I turned the hair dryer on, the voltage dropped to 119.8. I performed the same test of phase B and the voltage was 122.6 with the hair dryer off and 121.4 when the hair dryer was turned on. I also checked the voltage across A and B phase, it was 243.9, then I turned the hair dryer on and the voltage dropped to 242.8. I called the power company, and they told me if they can't find the problem, I would be billed for the crew's time. Any input from you on this matter would be greatly appreciated.

The testing was performed with a fluke 87 true rms multimeter.
 

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   
 

Old 01-02-2004, 02:44 PM   #2
Pro
 
Nathan's Avatar
 
Trade: Founder of Contractor Talk
Join Date: Jul 2003
Posts: 8,606
Rewards Points: 2,000

Re: Dimming Lights In House


I'll let an electrician answer.

But, please sign your posts so we know who you are...
Better yet, Register!

Thanks

__________________
Nathan

"He is no fool who gives what he cannot keep to gain that which he cannot lose." - Jim Elliot
Nathan is online now  
Old 01-06-2004, 10:57 PM   #3
Guest
Guest
 
Unregistered's Avatar
 
Posts: n/a
Question

Re: Dimming Lights In House


Quote:
Originally Posted by Unregistered
I'm having a problem in my home with lights dimming. I have checked the ground connection to the cold water system, main panel for loose connections, meter socket for loose connections. I was unable to check the ground connection at the rod outside because its buried too deep. I performed a test using a 1250 watt hair dryer to put a load on a branch circuit that was on phase A. The voltage without the hair dryer on was 121.3, when I turned the hair dryer on, the voltage dropped to 119.8. I performed the same test of phase B and the voltage was 122.6 with the hair dryer off and 121.4 when the hair dryer was turned on. I also checked the voltage across A and B phase, it was 243.9, then I turned the hair dryer on and the voltage dropped to 242.8. I called the power company, and they told me if they can't find the problem, I would be billed for the crew's time. Any input from you on this matter would be greatly appreciated.

The testing was performed with a fluke 87 true rms multimeter.
do the lights dim only when major appliances come on??? if so it sounds like a voltage problem not with the power co. but the wire size (awg) feeding the major appliances.ex--a/c, heat, dry,H2O heater maby. question are the appliances far from the power sorce?? make sure your service conductors are the proper size (2/0--3/0--4/0--500kcmil etc............
 
Old 02-16-2004, 03:51 PM   #4
Guest
Guest
 
Unregistered's Avatar
 
Posts: n/a
Angry

Re: Dimming Lights In House


Quote:
Originally Posted by Unregistered
do the lights dim only when major appliances come on??? if so it sounds like a voltage problem not with the power co. but the wire size (awg) feeding the major appliances.ex--a/c, heat, dry,H2O heater maby. question are the appliances far from the power sorce?? make sure your service conductors are the proper size (2/0--3/0--4/0--500kcmil etc............
The lights will dim when the well pump turns on ,clothes dryer.I can plug a hand held hair dryer into any receptical in the house and the lights will dim.
 
Old 02-16-2004, 03:55 PM   #5
Guest
Guest
 
Unregistered's Avatar
 
Posts: n/a

Re: Dimming Lights In House


Quote:
Originally Posted by Unregistered
The lights will dim when the well pump turns on ,clothes dryer.I can plug a hand held hair dryer into any receptical in the house and the lights will dim.
Iforgot to mention that the service is 200amps and the feeder size is 4/0 aluminum.All connections are tight .
 


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Did you see Flip this house - Cat House? SuperiorBuilt Off Topic (Non Trade) 18 01-24-2011 04:17 PM
House moving Toolwh@#e Excavation & Site Work 10 10-21-2007 10:23 PM
`Flip This House' star accused of fraud AmeliaP General Discussion 28 06-03-2007 09:21 PM
Funding for first spec house? ruskent Business 28 01-17-2006 07:10 PM
prob with dimming lights greenley Electrical 2 01-06-2006 09:56 AM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?