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#46267 - 12/17/04 05:46 PM GFCI garbage disposal?
Electric Ian Offline
Member

Registered: 02/10/04
Posts: 132
Loc: MA, USA
Do you typically install a GFCI for a garbage disposal receptacle?

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#46268 - 12/17/04 05:55 PM Re: GFCI garbage disposal?
Northbayec Offline
Member

Registered: 12/16/04
Posts: 26
Loc: San Rafael, CA U.S.A
Normally you don't GFCI protect fixed appliances. Roof De-ice being an exception. Just to let you know I have had inspectors make me install a single receptacle for the disposal so nothing else can be plugged in down there.

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#46269 - 12/17/04 05:55 PM Re: GFCI garbage disposal?
Dave55 Offline
Member

Registered: 05/08/04
Posts: 666
Loc: Crystal Lake, Illinois, USA
I typically wire directly to them without a cord and plug, or receptacle.

Dave

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#46270 - 12/17/04 06:52 PM Re: GFCI garbage disposal?
royta Offline
Member

Registered: 09/03/04
Posts: 136
Loc: CA
There is a single recep, under the kitchen sink in our home, that is fed by a 15A multi-wire circuit. One half of the recep is switched, and supplies the disposer. The other recep supplies the dishwasher. Of course the recep is supplied by a 2-pole breaker.

Northbayec - I read 210.8(A)(3)Exception and the NEC Handbook commentary in 426.28. The second to last paragraph in the commentary says, "It is important to understand that this required equipment protection is not the same as a ground-fault circuit interrupter used for personal protection that trips at 5 milliampteres (+/-1 milliampere)." Is the equipment the NEC is not referring to, the standard GFCI receps referred to in 210.8?

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#46271 - 12/17/04 09:04 PM Re: GFCI garbage disposal?
FWW56 Offline
Member

Registered: 10/16/04
Posts: 17
Loc: Pgh, Pa
No GFCI for disposals around here (western Pa), countertop recpts only in the kitchen.

Typically hard wired as are the dishwashers. The exception being tract houses which we install a switched standard duplex 15amp recpt on it's own 20a circuit in the sink base for the disposal. Another one unswitched on the wall behind the dishwasher also on it's own 20a circuit. No GFCI in either case.

Frank

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#46272 - 12/18/04 01:46 AM Re: GFCI garbage disposal?
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Question:

Do you have to install a wall switch for the dishwasher in a one family dwelling if it is hard wired?

PS: The term "kitchen waste disposers" is used in the NEC because some people thought that all "garbage" was to be put into the sink!
_________________________
Joe Tedesco, NEC Consultant

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#46273 - 12/18/04 03:30 AM Re: GFCI garbage disposal?
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
 Quote:
Do you have to install a wall switch for the dishwasher in a one family dwelling if it is hard wired?


No.

Does the dishwasher have a switch 'marked off'?

Is the electric panel in sight?

Bob
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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#46274 - 12/18/04 03:37 AM Re: GFCI garbage disposal?
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Electric Ian

 Quote:
Do you typically install a GFCI for a garbage disposal receptacle?


Are you asking if it is required?

Depends, commercial kitchen or dwelling unit kitchen?

In a dwelling unit kitchen only 15 and 20 amp receptacles that serve counter tops must be GFCI protected.

So a disposal outlet under the counter is not required to be GFCI protected.

In a commercial kitchen if you did have a cord connected disposal connected to any 15 or 20 amp 120 volt receptacles it would be required to be GFCI protected.

ALL 15 & 20 amp 120 volt receptacles in commercial kitchens must have GFCI protections...no exceptions.

Bob
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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#46275 - 12/18/04 04:26 AM Re: GFCI garbage disposal?
velect Offline
Member

Registered: 05/01/04
Posts: 79
Loc: st joseph mi usa
My local inspector requires breaker lockouts on hardwired dishwashers. Also on harwired built-in ovens, cooktops and saunas

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#46276 - 12/18/04 07:13 AM Re: GFCI garbage disposal?
Electric Ian Offline
Member

Registered: 02/10/04
Posts: 132
Loc: MA, USA
iwire
No, I know it is not required but I was wondering if any of you guys typically install one. What sparked my curiousity on this subject was an online installation manual for a particular brand disposal (forget which one off hand) that "recommended" connection to a GFCI receptacle. I thought, hmm, that's interesting cause I've never done so and was just wondering if others do. Keep in mind the manufacturer usd the term "recommend" not "required".

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