another disposal dishwasher question

Status
Not open for further replies.
wbalsam1 said:
Please let me pose a hypothetical here for the purpose of learning something. Feel free to cite code violations.....

but what would be the matter with running a 10/2 with ground NM cable from the panelboard and fused at 20 amperes to a junction box mounted beneath the kitchen sink and tapping #12/2 wg off to a single receptacle rated at 20 amperes for the 4' cord of the dishwasher to plug into, and another 12/2 tap just like it for the disposal?

....I've never done this and only thought of it today after Charlie B's post. :smile: I'll hang back and take my lumps....:D



edited to 20 amperes
Click to expand...


I believe table 210.21(B)(3) would not allow what you propose...
 
Last edited:
wbalsam1 said:
Are you also (in addition to the Table) referring to 210.23(A)(2) where it talks about 50% of the bc ampere rating? :smile:
Click to expand...


I don't believe it is legal to have a 25 amp branch circuit for receptacles, but if you use a 20 amp circuit then you have to follow 210.23.
 
We've always wired the house with a 12/2 to the dishwasher/disposal... IF you look at the dishwasher and disposal's available these days you'll notice that a dishwasher usually draws 10amps, and a disposal will draw about 4-6amps.. Within the safety zone.

Disposal: http://products.geappliances.com/Ap...QUEST=SPECPAGE&SKU=GFC530F&SITEID=GEA&TABID=2

4.5amps

Dishwasher: http://products.geappliances.com/Ap...ST=SPECPAGE&SKU=PDW8600NBB&SITEID=GEA&TABID=2

9.1 amps...

Why waste wire and materials when you don't have to??
 
badabing said:
We've always wired the house with a 12/2 to the dishwasher/disposal... IF you look at the dishwasher and disposal's available these days you'll notice that a dishwasher usually draws 10amps, and a disposal will draw about 4-6amps.. Within the safety zone.



Why waste wire and materials when you don't have to??
Click to expand...


I don't do to many houses that use GE appliances... ;)
 
?This appliance must be supplied with 120V, 60Hz., and
connected to an individual properly grounded branch circuit
protected by a 15 or 20 ampere circuit breaker or time delay
fuse.?

The above instructions come from the GE site provided
Dishwasher: http://products.geappliances.com/App...= GEA&TABID=2

Our electrical inspectors require us to follow the manufactures instructions for the installation.
 
I have gone both ways on the issue myself. I have resolved to always follow code on the matter and, if I know the loads exceed that allowed on the circuit, provide separate dedicated branch circuits. Will it work on a single circuit, almost certainly. Will you have any problems or complaints, probably not. But, the thing to keep in mind is that 200 unit owners morph into 200 potential litigants shortly after you finish. The fewer items for a future engineer to point out code deficiencies, which WILL happen at the request of the condo association lawyers, that better it will be for your sake. Trust me on this issue...
 
I agree that we must follow code. The question is, what section (if any) of the code is this proposed installation violating? I can't find it, at least not anything clear. The "individual branch circuit" in the instructions certainly muddies the water. Was this "instruction" included in "the listing and labeling" of the product as mentioned in 110.3(B)? Does the manufacturer just mentioning something in their owner's manual make it binding? Nothing is easy or only black or white. There are always shades of gray.
 
Ask the owner to supply cut sheets of the disposal and dishwasher to be installed. If the loads add up to more than 16 amps, I would avoid putting both on the same circuit...although, since neither are considered "continuous load", loading the circuit up to 100% (20A) should also be acceptable. The inspector may have a different opinion, so check with him/her also. The caveat is that if the manufacturer's installation instructions of the equipment to be installed indicates to provide a dedicated circuit for either, then provide a dedicated circuit for both. Getting an owner to commit to what they are going to install everywhere is often difficult. They may also provide the owners with upgrades, such as changing the 1/2 hp standard disposal to a 3/4 or 1 hp. Make sure you know if this can happen.
 
tackmaster1978 said:
Im looking to save some serious coin for my company. Ive got over 200 apt no larger than 800 sq. ft. I want to put the dishwasher and the disposal not only on the same circuit, but use the same outlet. under the sink. That will save me 200 breakers 200 4 sguare bx 200 recp. and the wire.
On second thought:
200 breakers is what, 1000.00? 800 sq.ft. apartments, how far could the panel be from the kitchen?

I don't think this is "serious coin."
Click to expand...
Click to expand...
 
Status
Not open for further replies.
Top