Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-03-2011, 08:15 AM   #1
Newbie
 
Join Date: Dec 2010
Posts: 15
Share |
Default

GFCI tester shows hot/ground reversed, then not reversed


I just bought a GE 50957 GFCI receptacle tester.

http://www.amazon.com/50957-Tester-I...ef=pd_sim_hi_2

I tested several receptacles last night, both GFCI and non-GFCI, all checked out ok.

This morning I checked a receptacle that is GFCI protected (downstream from a GFCI receptacle), and the tester indicated that hot and ground were reversed. I pressed the test button, and the circuit went dead as expected. I then reset the GFCI and now all receptacles on the circuit show normal.

How could the hot and ground test reversed, then not reversed?

Thanks.

bw777 is offline   Reply With Quote
Old 02-03-2011, 08:57 AM   #2
Electrical Contractor
 
wirenut1110's Avatar
 
Join Date: Apr 2008
Location: Chester, VA.
Posts: 1,046
Send a message via AIM to wirenut1110
Default

GFCI tester shows hot/ground reversed, then not reversed


I believe when those testers show hot/ground reversed, it's an open neutral. Sounds like you may have a loose neutral connection.

wirenut1110 is offline   Reply With Quote
Old 02-03-2011, 10:13 AM   #3
Member
 
Join Date: Aug 2010
Posts: 95
Default

GFCI tester shows hot/ground reversed, then not reversed


That tester has 2 functions -
one is a recptacle tester, testing the for proper wiring: hot, neutra,l and ground wires, and their respective locations. it also tests the availability of the proper voltage. the led's show status.

second is a gfci tester. when the button is depressed, it install a resistance between hot and ground so that a small amount of current passes to the ground conductor (this is a ground fault, or short) which should activate the gfci reseptacle/circuit and trip it. resetting the gfci braker is then required. i don't think it is recommended to push the button on non-gfci protected circuits, which is where you're problem may be.
TimPa is offline   Reply With Quote
Old 02-03-2011, 11:49 AM   #4
Newbie
 
Join Date: Dec 2010
Posts: 15
Default

GFCI tester shows hot/ground reversed, then not reversed


Quote:
Originally Posted by wirenut1110 View Post
I believe when those testers show hot/ground reversed, it's an open neutral. Sounds like you may have a loose neutral connection.
There is a different code for open neutral. But I have not checked for a loose neutral yet.
Attached Thumbnails
GFCI tester shows hot/ground reversed, then not reversed-img_1296.jpg  
bw777 is offline   Reply With Quote
Old 02-03-2011, 11:53 AM   #5
Newbie
 
Join Date: Dec 2010
Posts: 15
Default

GFCI tester shows hot/ground reversed, then not reversed


Quote:
Originally Posted by TimPa View Post
i don't think it is recommended to push the button on non-gfci protected circuits, which is where you're problem may be.
I tested a non-GFCI receptacle, pushed the button, then tested the receptacle that showed hot/ground reversed this morning, and it tested ok.

There is a freezer on the gfci circuit, in the basement. Maybe it was running or started up when I was testing this morning and caused the reverse test?

Edit - I just read the instructions again, and it does say to unplug all appliances on the circuit before testing.

Last edited by bw777; 02-03-2011 at 12:02 PM.
bw777 is offline   Reply With Quote
Old 02-04-2011, 08:17 AM   #6
Scared Electrician
 
Saturday Cowboy's Avatar
 
Join Date: Nov 2009
Location: Colorado
Posts: 715
Default

GFCI tester shows hot/ground reversed, then not reversed


Quote:
Originally Posted by TimPa View Post
i don't think it is recommended to push the button on non-gfci protected circuits, which is where you're problem may be.
Absolutely no reason not to. It is the only way to check the operation of a protected receptical.
__________________
Ragged Trousered Philanthropist


Please follow the code - its there for your safety no matter how inconvenient.
Saturday Cowboy is offline   Reply With Quote
Old 02-04-2011, 08:47 AM   #7
Member
 
Join Date: Aug 2010
Posts: 95
Default

GFCI tester shows hot/ground reversed, then not reversed


are you implying the gfci test button is also recommended for testing the circuit beaker (operation) in the load panel that is protecting the wire? I guess i have never heard that, so i am curious.
TimPa is offline   Reply With Quote
Old 02-04-2011, 09:16 AM   #8
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,782
Default

GFCI tester shows hot/ground reversed, then not reversed


The only way that tester will test a circuit breaker is if the breaker is a GFCI. Using it on a standard circuit will do nothing other than to check for correct wiring.

brric is online now   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Circuit tester shows open neutral; multi-meter says something different. fredgmeyer Electrical 11 10-26-2009 12:41 PM
GFCI Tester PaliBob Project Showcase 0 10-22-2009 05:14 AM
On one outlet my GFCI tester has all three lights lit. What does it mean? Deck Electrical 6 07-09-2008 09:18 PM
GFCI Question Mdbuilder Electrical 6 06-19-2008 03:15 PM
GFCI questions 5circles Electrical 4 11-05-2007 08:24 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.