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 06-17-2011, 03:22 PM   #1
Member
 
Join Date: Jan 2008
Location: Connecticut, US
Posts: 241
Share |
Default

garbage disposal wiring - hardwire question


Planning for a hardwired garbage disposal in a kitchen renovation. Does the 12/2 NM cable just come in through a hole in the back of the cabinet to get connected at the garbage disposal's built in wire connection cavity? Is there a nice way to bring the cable through the wall that looks a bit more "finished" than just feeding it through a hole in the gyp. bd.? Thanks.
tpagel is offline   Reply With Quote
Old 06-17-2011, 03:31 PM   #2
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Default

garbage disposal wiring - hardwire question


If the disposal is designed to be hardwired, then there are several "whips" which could be used to neaten up the installation. The existing circuit would need to be terminated in a junction box at the wall, then a whip could finish the connection from the box to the disposal with proper wire size, connections and junction box.
Missouri Bound is offline   Reply With Quote
Old 06-17-2011, 04:00 PM   #3
Lic Electrical Inspector
 
electures's Avatar
 
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,511
Default

garbage disposal wiring - hardwire question


I just run the romex directly into the unit. Just keep it up and away from anything in the cabinet. Use a romex connector.
electures is online now   Reply With Quote
Old 06-17-2011, 04:25 PM   #4
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 12,905
Default

garbage disposal wiring - hardwire question


Quote:
Originally Posted by electures View Post
I just run the romex directly into the unit. Just keep it up and away from anything in the cabinet. Use a romex connector.
Only problem is, that is not the correct way, and not all jurisdictions allow direct wiring of Romex to the disposal.
gregzoll is online now   Reply With Quote
Old 06-17-2011, 04:36 PM   #5
Member
 
Join Date: Jan 2008
Location: Connecticut, US
Posts: 241
Default

garbage disposal wiring - hardwire question


I would very much prefer to have a cord and receptacle situation. Do insinkerators (for instance) give an option for either, or are most hardwired?
tpagel is offline   Reply With Quote
Old 06-17-2011, 04:45 PM   #6
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 12,905
Default

garbage disposal wiring - hardwire question


You have to put in a GFCI outlet underneath, a switch to control the outlet, and yes a cord attached and secured to the Dispo-all. Keep in mind rules vary local to local, so check with your AHJ.
gregzoll is online now   Reply With Quote
Old 06-17-2011, 04:49 PM   #7
Member
 
Join Date: Jan 2008
Location: Connecticut, US
Posts: 241
Default

garbage disposal wiring - hardwire question


I actually planned for the switch and receptacle, and have it wired that way now. Today I sat back and wondered if the GD had that option, and as I researched installing these things on Youtube, they all seemed to be hardwired, so I thought maybe I made a mistake.
tpagel is offline   Reply With Quote
Old 06-17-2011, 05:06 PM   #8
Too Short? Cut it Again!
 
Join Date: Sep 2009
Posts: 9,635
Default

garbage disposal wiring - hardwire question


I prefer them plugged into an outlet. It makes it easier to switch a fried one as some lines use a common mounting bracket and you can just twist a new one in place and plug it in. I think most have the option of doing it either way subject to preference and local code. You have to buy the "pigtail" with the plug on one end and the wire connections on the other.
user1007 is offline   Reply With Quote
Old 06-17-2011, 05:55 PM   #9
Lic Electrical Inspector
 
electures's Avatar
 
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,511
Default

garbage disposal wiring - hardwire question


Quote:
Originally Posted by gregzoll View Post
Only problem is, that is not the correct way, and not all jurisdictions allow direct wiring of Romex to the disposal.
Yet again we need more information. According to the 2008 NEC;

422.16 Flexible Cords.

(A) General.
Flexible cord shall be permitted

(1) for the connection of appliances to facilitate their frequent interchange or to prevent the transmission of noise or vibration or


(2) to facilitate the removal or disconnection of appliances that are fastened in place, where the fastening means and mechanical


connections are specifically designed to permit ready removal for maintenance or repair and the appliance is intended

or identified for flexible cord connection.




A flexible cord shall be permitted. It can be hard wired. The switch at the sink can serve as the required disconnect.


If it is cord a plud connected (which is convenient) the receptacle under the sink is not required to be GFI protected.


210.8 Ground-Fault Circuit-Interrupter Protection for Personnel.
(A) Dwelling Units.


All 125-volt, single-phase, 15- and 20-ampere receptacles installed in the locations specified in


(1) through (8) shall have ground-fault circuit-interrupter protection for personnel.


(6) Kitchens — where the receptacles are installed to serve the countertop surfaces


Receptacles for disposals and D/W's do require GFI protection. Again, this all depends on local and state codes and the EI.


Last edited by electures; 06-18-2011 at 04:39 PM. Reason: Cleaned up formatting.
electures is online now   Reply With Quote
Old 06-17-2011, 06:02 PM   #10
Member
 
Join Date: Jan 2008
Location: Connecticut, US
Posts: 241
Default

garbage disposal wiring - hardwire question


Thanks for all the replies and insight. I will check with my building inspector to see if he has any preference or requirements.
tpagel is offline   Reply With Quote
Old 06-17-2011, 06:56 PM   #11
Member
 
Join Date: May 2008
Location: Near Philly
Posts: 1,985
Default

garbage disposal wiring - hardwire question


So if a GFCI outlet is installed in the wall behind the DW and the DW is plugged into the outlet what does the homeowner need to do to reset the GFCI if there is a nuisance trip?
bob22 is offline   Reply With Quote
Old 06-17-2011, 08:22 PM   #12
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 12,905
Default

garbage disposal wiring - hardwire question


electures, not every AHJ requires the same restriction. Some actually tighten the restrictions, and the NEC, more than others. That is why it is stated over and over to check with your locals, not rely on web info or the NEC for everything.
gregzoll is online now   Reply With Quote
Old 06-17-2011, 08:23 PM   #13
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 12,905
Default

garbage disposal wiring - hardwire question


Quote:
Originally Posted by bob22 View Post
So if a GFCI outlet is installed in the wall behind the DW and the DW is plugged into the outlet what does the homeowner need to do to reset the GFCI if there is a nuisance trip?
Only a bubba would put a GFCI behind a DW. Anyone in their right mind would put it in the sink base to be accessible.
gregzoll is online now   Reply With Quote
Old 06-17-2011, 08:34 PM   #14
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Default

garbage disposal wiring - hardwire question


Yep. The GFCI is not required UNDER the sink. The rule if for outlets which supply the countertop.
Missouri Bound is offline   Reply With Quote
The Following User Says Thank You to Missouri Bound For This Useful Post:
electures (06-18-2011)
Old 06-18-2011, 06:26 AM   #15
Lic Electrical Inspector
 
electures's Avatar
 
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,511
Default

garbage disposal wiring - hardwire question


Quote:
Originally Posted by bob22 View Post
So if a GFCI outlet is installed in the wall behind the DW and the DW is plugged into the outlet what does the homeowner need to do to reset the GFCI if there is a nuisance trip?
The receptacle is not required to be GFI protected. Only counter top receptacles.

"Again, this all depends on local and state codes and the EI."

Last edited by electures; 06-18-2011 at 06:29 AM.
electures 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
220 Volt Electrical Wiring Question ... for light ??? shotguns Electrical 11 05-21-2011 09:03 PM
Replacing disposal...wiring regs twinrider1 Electrical 2 04-28-2011 05:19 PM
kitchen faucet with spray nozzle, dishwasher and garbage disposal iklektic Plumbing 2 03-24-2011 10:53 PM
Disposal wiring Shammie Electrical 6 03-08-2011 11:21 PM
Trane Heat Pump tstat replacement with Honeywell prog - wiring question sep23 HVAC 2 10-20-2006 09:10 PM




Top of Page | View New Posts

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