Very Simple Light Fixture Electrical Question - Electrical - DIY Chatroom Home Improvement Forum
Advertisement


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

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

Like Tree2Likes
  • 2 Post By rjniles
Reply
 
Thread Tools Search this Thread
Display Modes
Old 03-24-2020, 09:37 AM   #1
Newbie
 
Join Date: Oct 2019
Posts: 26
Rewards Points: 52
Default

Very simple light fixture electrical question


I am replacing a light fixture and when I removed the existing one there were three wires in the box, white/black/bare copper wire. The white and black were connected to the fixture, the bare copper wire was not.

My new fixture has a white, black, and green wire. My question is two fold: why would the original bare copper wire have been left unconnected, and should I connect the green wire of my new light fixture to the bare copper wire in the box?

There is also a Ground screw on the metal bracket that attaches the new fixture to the box in the wall. Should the copper wire be attached to this? I would think that whether I attached it to the green wire or the screw on the metal bracket it would be the same effect?

For what it is worth the current box is plastic and the old receptacle had a ceramic base and only two screws to connect wires to.

Thanks for the help.
ndgregor is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-24-2020, 09:44 AM   #2
A "Handy Husband"
 
rjniles's Avatar
 
Join Date: Feb 2007
Location: South Carolina Low Country
Posts: 11,199
Rewards Points: 894
Default

Re: Very simple light fixture electrical question


When you have a non-metallic fixture the ground is left unattached in the plastic box.
For your new fixture connect the bare wire to the fixture strap screw and the green wire.
Bondo and ndgregor like this.
__________________
My electrical answers are based on 2017 NEC, you may have local amendments.

Location: Coastal South Carolina
rjniles is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-24-2020, 09:49 AM   #3
Newbie
 
Join Date: Oct 2019
Posts: 26
Rewards Points: 52
Default

Re: Very simple light fixture electrical question


Okay just to clarify both the bare copper wire existing in the box and the green wire from the new fixture will be tied to the ground screw in the metal strap?
ndgregor is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-24-2020, 09:55 AM   #4
A "Handy Husband"
 
rjniles's Avatar
 
Join Date: Feb 2007
Location: South Carolina Low Country
Posts: 11,199
Rewards Points: 894
Default

Re: Very simple light fixture electrical question


Quote:
Originally Posted by ndgregor View Post
Okay just to clarify both the bare copper wire existing in the box and the green wire from the new fixture will be tied to the ground screw in the metal strap?
Yes, what I usually do if the bare ground is long enough is wrap the bare copper around the screw (and tighten screw) and leave a short tail. Then I wire nut the tail to the green fixture wire.
__________________
My electrical answers are based on 2017 NEC, you may have local amendments.

Location: Coastal South Carolina
rjniles is online now   Reply With Quote
Old 03-24-2020, 10:01 AM   #5
Newbie
 
Join Date: Feb 2020
Posts: 9
Default

Re: Very simple light fixture electrical question


Connect the green wire from fan to the copper bare wire. Then connect them to the green screw in the box


Sent from my iPhone using Tapatalk
jmal1031 is offline   Reply With Quote
Old 03-24-2020, 10:10 AM   #6
A "Handy Husband"
 
rjniles's Avatar
 
Join Date: Feb 2007
Location: South Carolina Low Country
Posts: 11,199
Rewards Points: 894
Default

Re: Very simple light fixture electrical question


Quote:
Originally Posted by jmal1031 View Post
Connect the green wire from fan to the copper bare wire. Then connect them to the green screw in the box


Sent from my iPhone using Tapatalk
There is no green screw in the box, the screw is on the fixture strap.
__________________
My electrical answers are based on 2017 NEC, you may have local amendments.

Location: Coastal South Carolina
rjniles is online now   Reply With Quote
Old 03-24-2020, 10:43 AM   #7
Member
 
Join Date: Mar 2020
Posts: 794
Rewards Points: 1,590
Default

Re: Very simple light fixture electrical question


Yes, in the various countries of the world, wire colors vary. But safety ground is always and only green, yellow-green, or bare. Any such wires should go together, and should be connected first.
seharper is online now   Reply With Quote
Sponsored Links
Advertisement
 
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





Top of Page | View New Posts