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 03-31-2010, 02:46 PM   #1
Military Mom of 4
 
Snav's Avatar
 
Join Date: Aug 2009
Location: Arkansas
Posts: 974
Share |
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Sketching up the deal is easier than trying to get a good photo in the attic of the issue in question.

So I'm wiring for the bathroom and this is the present setup:


Now - before I dug through the insulation to see the wiring I was planing on leaving it all alone, reusing the existing wiring and just replacing the light-fixtures but now that I see what was done I'm not sure if I can.

I've tried to read up and determine how acceptable this is but there's no pinpoint answer to this.

So - ok to leave or do I need to redo?

__________________
At this present moment in time I am making cabinets for the kitchen - just in case you wanted to know what I'm doing when I'm not around.
Snav is offline   Reply With Quote
Old 03-31-2010, 02:54 PM   #2
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,844
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


I would say it is fine unless you are replacing the fixtures with new ones that require 90 deg. C conductors and the existing conductors are not so rated.

brric is offline   Reply With Quote
Old 03-31-2010, 03:02 PM   #3
Military Mom of 4
 
Snav's Avatar
 
Join Date: Aug 2009
Location: Arkansas
Posts: 974
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


The old wiring is NM-B so I should be good then.

Thanks
__________________
At this present moment in time I am making cabinets for the kitchen - just in case you wanted to know what I'm doing when I'm not around.
Snav is offline   Reply With Quote
Old 03-31-2010, 03:04 PM   #4
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 2,844
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Yes, NM-B conductors are rated at 90 deg. C.
brric is offline   Reply With Quote
Old 03-31-2010, 03:55 PM   #5
Military Mom of 4
 
Snav's Avatar
 
Join Date: Aug 2009
Location: Arkansas
Posts: 974
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Thank you, appreciate it - I was really not looking forward to having to rerun the wires
__________________
At this present moment in time I am making cabinets for the kitchen - just in case you wanted to know what I'm doing when I'm not around.
Snav is offline   Reply With Quote
Old 03-31-2010, 04:53 PM   #6
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Myself I replace any wiring without a ground
Scuba_Dave is offline   Reply With Quote
Old 03-31-2010, 05:11 PM   #7
Military Mom of 4
 
Snav's Avatar
 
Join Date: Aug 2009
Location: Arkansas
Posts: 974
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


A lot of my receptacles and so forth aren't grounded so I'm fishing ground wire through separately - I'll simply add it onto this in the same manor.
__________________
At this present moment in time I am making cabinets for the kitchen - just in case you wanted to know what I'm doing when I'm not around.
Snav is offline   Reply With Quote
Old 03-31-2010, 09:35 PM   #8
Registered User
 
Join Date: Mar 2009
Posts: 9,968
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Don't forget the GFCI required in the bathroom........ ground or not. Whoops, ceiling lights, ah well - a good thought anyway.

Be safe, Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Old 03-31-2010, 09:38 PM   #9
Master Electrician
 
Join Date: Mar 2010
Location: Toronto Ontario
Posts: 1,165
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Quote:
Originally Posted by Scuba_Dave View Post
Myself I replace any wiring without a ground

by far the best way to do it....so much stuff depends on the ground these days and far too many people just plop a three prong outlet on old wire.

then they wonder why they're electronic equipment suddenly stops working
andrew79 is offline   Reply With Quote
Old 04-01-2010, 12:47 PM   #10
Military Mom of 4
 
Snav's Avatar
 
Join Date: Aug 2009
Location: Arkansas
Posts: 974
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Quote:
Originally Posted by GBR in WA View Post
Don't forget the GFCI required in the bathroom........ ground or not. Whoops, ceiling lights, ah well - a good thought anyway.

Be safe, Gary
Got it covered.

You know all those bad experiences that people give keen advice in order to steer someone from ever going through it - well, I've been through all that.
__________________
At this present moment in time I am making cabinets for the kitchen - just in case you wanted to know what I'm doing when I'm not around.
Snav is offline   Reply With Quote
Old 04-01-2010, 07:40 PM   #11
Member
 
Join Date: Jul 2008
Location: Canada (s/w ON.)
Posts: 2,294
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Quote:
Originally Posted by andrew79 View Post
by far the best way to do it....so much stuff depends on the ground these days and far too many people just plop a three prong outlet on old wire.

then they wonder why they're electronic equipment suddenly stops working
The Ontario Electrical Safety code allows ungrounded receptacles to be replaced with GFCI receptacles.

I assume that you are saying that the electronic equipment may fail if its surge protector doesn't have a grounded electrical supply! I'm unsure whether this is a fact or not, but my home, built in 1948 was wired with ungrounded Romex, and I have yet to have any of my electronics damaged due to this!
The intent of having grounded outlets was to ground the case of electrical appliances in case a short circuit occurred from the hot conductor to the case. It would then force the breaker to trip, thus protecting users!
Now we see double insulated devices, that do not require a ground for this purpose, so is it possible, that in the future grounded outlets will become obsolete?
Wildie is offline   Reply With Quote
Old 04-01-2010, 08:07 PM   #12
Master Electrician
 
Join Date: Mar 2010
Location: Toronto Ontario
Posts: 1,165
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Quote:
Originally Posted by Wildie View Post
The Ontario Electrical Safety code allows ungrounded receptacles to be replaced with GFCI receptacles.

I assume that you are saying that the electronic equipment may fail if its surge protector doesn't have a grounded electrical supply! I'm unsure whether this is a fact or not, but my home, built in 1948 was wired with ungrounded Romex, and I have yet to have any of my electronics damaged due to this!
The intent of having grounded outlets was to ground the case of electrical appliances in case a short circuit occurred from the hot conductor to the case. It would then force the breaker to trip, thus protecting users!
Now we see double insulated devices, that do not require a ground for this purpose, so is it possible, that in the future grounded outlets will become obsolete?
not likely.....and some electronics stiplulate the there must be a ground connected for them to work properly. I actually had another post going in here where because of no ground electronic ballasts were inducing a voltage into the ceiling grid.
Part two of this is that in the event of a lightning strike the ground is what saves lives.
A third thing to mention would be what happens if your short happens in a wall or a box. That box is now live.
No the new code books are actually getting more strict on ground use rather than more lax. Grounds save lives.....period.
andrew79 is offline   Reply With Quote
Old 04-05-2010, 11:21 AM   #13
Military Mom of 4
 
Snav's Avatar
 
Join Date: Aug 2009
Location: Arkansas
Posts: 974
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Well - it wasn't fun but it's done. I found a few "eaten" parts of the existing wire (rats - old damage) while hanging my durrock so I rewired it all as a continual circuit rather than the mega-branch and just fed the new wire with ground in properly.

I didn't want to do it but now that it's done it wasn't *that* bad and only took a day.
__________________
At this present moment in time I am making cabinets for the kitchen - just in case you wanted to know what I'm doing when I'm not around.
Snav is offline   Reply With Quote
Old 04-05-2010, 11:32 AM   #14
Learning by Doing
 
Leah Frances's Avatar
 
Join Date: Jan 2008
Location: Easton, Maryland
Posts: 3,156
Blog Entries: 7
Default

Existing wiring (with diagram sketch) - is it ok to leave alone or should I rewire


Quote:
Originally Posted by Snav View Post
Well - it wasn't fun but it's done. I found a few "eaten" parts of the existing wire (rats - old damage) while hanging my durrock so I rewired it all as a continual circuit rather than the mega-branch and just fed the new wire with ground in properly.

I didn't want to do it but now that it's done it wasn't *that* bad and only took a day.
you get 100 awesomeness points for doing it right the first time

__________________
If I could only remember to THINK about what I was doing before I did it.
Leah Frances 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
Pot lights wiring diagram Eaglenest Electrical 5 03-29-2010 12:09 PM
Need Luxaire Forced Air Furnace Wiring Diagram misticvillage HVAC 7 04-15-2009 04:09 AM
wiring diagram question screenporch21 Electrical 10 11-30-2008 08:14 PM
Wiring Diagram Help Designman20 Electrical 3 10-22-2007 05:46 PM
wiring diagram potter67 Electrical 42 09-19-2007 12:30 PM




Top of Page | View New Posts

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