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GFCI garbage disposal? #46267
12/17/04 08:46 PM
12/17/04 08:46 PM
E
Electric Ian  Offline OP
Member
Joined: Feb 2004
Posts: 133
MA, USA
Do you typically install a GFCI for a garbage disposal receptacle?

Work Gear for Electricians and the Trades
Re: GFCI garbage disposal? #46268
12/17/04 08:55 PM
12/17/04 08:55 PM
N
Northbayec  Offline
Member
Joined: Dec 2004
Posts: 27
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.

Re: GFCI garbage disposal? #46269
12/17/04 08:55 PM
12/17/04 08:55 PM
D
Dave55  Offline
Member
Joined: May 2004
Posts: 697
Crystal Lake, Illinois, USA
I typically wire directly to them without a cord and plug, or receptacle.

Dave

Re: GFCI garbage disposal? #46270
12/17/04 09:52 PM
12/17/04 09:52 PM
R
royta  Offline
Member
Joined: Sep 2004
Posts: 138
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?

Re: GFCI garbage disposal? #46271
12/18/04 12:04 AM
12/18/04 12:04 AM
F
FWW56  Offline
Member
Joined: Oct 2004
Posts: 17
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

Re: GFCI garbage disposal? #46272
12/18/04 04:46 AM
12/18/04 04:46 AM
Joe Tedesco  Offline
Member
Joined: Oct 2000
Posts: 2,749
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!
[Linked Image]


Joe Tedesco, NEC Consultant
Re: GFCI garbage disposal? #46273
12/18/04 06:30 AM
12/18/04 06:30 AM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
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. [Linked Image]

Does the dishwasher have a switch 'marked off'?

Is the electric panel in sight?

Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: GFCI garbage disposal? #46274
12/18/04 06:37 AM
12/18/04 06:37 AM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
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
Re: GFCI garbage disposal? #46275
12/18/04 07:26 AM
12/18/04 07:26 AM
V
velect  Offline
Member
Joined: May 2004
Posts: 81
st joseph mi usa
My local inspector requires breaker lockouts on hardwired dishwashers. Also on harwired built-in ovens, cooktops and saunas

Re: GFCI garbage disposal? #46276
12/18/04 10:13 AM
12/18/04 10:13 AM
E
Electric Ian  Offline OP
Member
Joined: Feb 2004
Posts: 133
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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