I was running conduit in a home that had been roughed in by another contractor. this is a new home and my partner and i noticed that they had ran a 14-2 romex for the disposal. we looked in the code book to see if that was legal. i thought all small kitchen appliances had to be 20 amp circuits. we looked under the '99 book and i couldn't find where it had to be 20 amp.
Garbage Disposal
- Thread starter jntsee
- Start date
- Status
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: Garbage Disposal
The 20 amp rule relates to receptacle outlets. If this is a dedicated circuit and if the disposal is hard-wired (no receptacle), then a 15 amp circuit is acceptable. Reference: 210.11(C)(1).
The 20 amp rule relates to receptacle outlets. If this is a dedicated circuit and if the disposal is hard-wired (no receptacle), then a 15 amp circuit is acceptable. Reference: 210.11(C)(1).
ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: Garbage Disposal
210.11(C)(1) refers you to the receptacle outlets required by 210.52(B). 210.52(B)refers you to countertop receptacles and general use receptacles. Since the garbage disposal is not covered by 210.52(A) or (C), it is permitted to be on a 15 amp circuit.
EDIT: Looks like Charlie and I posted at the same time again
[ February 01, 2004, 12:05 PM: Message edited by: ryan_618 ]
210.11(C)(1) refers you to the receptacle outlets required by 210.52(B). 210.52(B)refers you to countertop receptacles and general use receptacles. Since the garbage disposal is not covered by 210.52(A) or (C), it is permitted to be on a 15 amp circuit.
EDIT: Looks like Charlie and I posted at the same time again
[ February 01, 2004, 12:05 PM: Message edited by: ryan_618 ]
george t. everett
Senior Member
- Location
- New York
Re: Garbage Disposal
The disposal can be cord connected to a 15A single receptacle in the cabinet.
The disposal can be cord connected to a 15A single receptacle in the cabinet.
ryan_618
Senior Member
- Location
- Salt Lake City, Utah
Re: Garbage Disposal
George: Why would the receptacle have to be singular?
George: Why would the receptacle have to be singular?
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: Garbage Disposal
George said that it could be done, and I think we can all agree that that is correct. But I agree with you, in that I don?t think that it has to be a single outlet. 210.52 says that its requirements are ?? in addition to any receptacle that is ? located within cabinets?.?
George said that it could be done, and I think we can all agree that that is correct. But I agree with you, in that I don?t think that it has to be a single outlet. 210.52 says that its requirements are ?? in addition to any receptacle that is ? located within cabinets?.?
george t. everett
Senior Member
- Location
- New York
Re: Garbage Disposal
Ryan, Can a duplex receptacle be used if the disposal draws more then 7.5 amps? By using a single receptacle it would limit what would be pluged in.
Ryan, Can a duplex receptacle be used if the disposal draws more then 7.5 amps? By using a single receptacle it would limit what would be pluged in.
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: Garbage Disposal
George: I agree that a single receptacle would be a good idea, and I agree with your reason (to prevent other things from being plugged into the same circuit). But that's a design issue, not a code issue.
By the way, where did the "7.5 amps" come into the picture? You can load a 15 amp circuit to 80%, or 12 amps. Even if you threw in another 80% factor (i.e., for the motor load), you could still go as high as 9.6 amps.
[ February 02, 2004, 08:18 PM: Message edited by: charlie b ]
George: I agree that a single receptacle would be a good idea, and I agree with your reason (to prevent other things from being plugged into the same circuit). But that's a design issue, not a code issue.
By the way, where did the "7.5 amps" come into the picture? You can load a 15 amp circuit to 80%, or 12 amps. Even if you threw in another 80% factor (i.e., for the motor load), you could still go as high as 9.6 amps.
[ February 02, 2004, 08:18 PM: Message edited by: charlie b ]
Re: Garbage Disposal
George was correct ,and the reason behind a single 'RECEPTACLE' :
1. a disconnecting means , 430-109 (f)
2. in reference to Article 430 part M (Grounding)the NEC found that when an owner/occupant/plumber was called to replace a problemed disposal the proper grounding of a hard wired (flexible conduit)system was missing or inadequate. The grounded three prong attachment plug remedies this situation and safety will continue.
3. Therefore 1999 NEC 430-42(C) becomes applicable , a 15a circuit (opps! sorry Hurk good catch, RATING OF THE ATTACHMENT PLUG AND RECEPTACLE DETERMINE THE CIRCUIT RATING we usually use a 15a)
[ February 02, 2004, 09:18 PM: Message edited by: mjc ]
George was correct ,and the reason behind a single 'RECEPTACLE' :
1. a disconnecting means , 430-109 (f)
2. in reference to Article 430 part M (Grounding)the NEC found that when an owner/occupant/plumber was called to replace a problemed disposal the proper grounding of a hard wired (flexible conduit)system was missing or inadequate.
The grounded three prong attachment plug remedies this situation and safety will continue.3. Therefore 1999 NEC 430-42(C) becomes applicable , a 15a circuit (opps! sorry Hurk good catch, RATING OF THE ATTACHMENT PLUG AND RECEPTACLE DETERMINE THE CIRCUIT RATING we usually use a 15a)
[ February 02, 2004, 09:18 PM: Message edited by: mjc ]
jimwalker
Senior Member
- Location
- TAMPA FLORIDA
Re: Garbage Disposal
7.5 amps is 50% of the circuit if it goes over you can't have other loads
7.5 amps is 50% of the circuit if it goes over you can't have other loads
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: Garbage Disposal
HUH?
george t. everett
Senior Member
- Location
- New York
Re: Garbage Disposal
Thank you,Jimwalker!
Thank you,Jimwalker!
pierre
Senior Member
- Location
- Westchester County, New York
Re: Garbage Disposal
422.16 Flexible Cords.(B) Specific Appliances.
(1) Electrically Operated Kitchen Waste Disposers.
In referencing this section, there is no restriction here as to using a single receptacle.
Pierre
422.16 Flexible Cords.(B) Specific Appliances.
(1) Electrically Operated Kitchen Waste Disposers.
In referencing this section, there is no restriction here as to using a single receptacle.
Pierre
- Status