Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


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 04-25-2011, 12:29 PM   #1
Newbie
 
Join Date: Apr 2011
Posts: 1
Share |
Default

Connect a 2 wire grounded out let to a 2 wire ungrounded wire cable


In an older system, since both the ground wire and the neutral wire connect to the same point in the breaker box, why can't I install a 2-wire grounded outlet into a box with older NM, 2-wire with no ground wire system, by connecting the outlet safety ground to the neutral wire in the outlet box?

FranH70 is offline   Reply With Quote
Old 04-25-2011, 12:32 PM   #2
nap
You talking to me?
 
nap's Avatar
 
Join Date: Dec 2007
Location: sw mi
Posts: 5,407
Default

Connect a 2 wire grounded out let to a 2 wire ungrounded wire cable


First, because it is against code. Then, even though the neutral and ground connect at the panel, they are not connected in the field. By connecting them in the field, you turn all ground conductors into current carrying conductors, just as the neutral is. It is dangerous.

nap is offline   Reply With Quote
Old 04-25-2011, 12:59 PM   #3
Member
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 7,226
Default

Connect a 2 wire grounded out let to a 2 wire ungrounded wire cable


Use a gfci receptacle and leave the ground off.

The reason you don't do as you suggest is this. If the neutral becomes disconnected between the receptacle and the panel now all the grounded parts of your device are live at 120 volts. The current flows into the device on the hot and out the neutral and onto the ground which is connected to any metal surfaces of your device. It has no path back to the panel, so the device will not operate. If you touch the metal frame and something that is a true ground you become the path for current flow.
__________________
Do not PM with questions that can be asked in a forum. I will not respond.
joed is offline   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
Adding a wall switch to a pull chain fixture abacuslearns Electrical 17 12-20-2011 06:02 PM
What type of wire to connect motion sensor to light? beezlebub03 Electrical 1 05-31-2008 01:16 PM
Dryer Grounding??? Traci_howdyadothat Electrical 7 05-27-2008 01:14 PM
Grounded electrode on water pipe TW Lucas Electrical 7 05-12-2008 11:33 AM
Rewiring Setback rhinester Electrical 4 02-20-2008 10:24 AM




Top of Page | View New Posts

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