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  #1  
Old 11-27-2020, 05:55 PM
port1042 port1042 is offline
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Default Kitchen Upgrade

I'm redoing my kitchen including replacing and relocating the wiring in most of it. I'm putting two outlets under the sink for the dishwasher and disposal. According the installation instructions these can be either 15amp or 20amp dedicated circuits. The run for each outlet will be less than 10 feet from the panel in the basement right below. Would it make any sense, other then a minor cost difference, to put in 15amp circuits? Both outlets will be dedicated and i'm mounting single outlets at each location.
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Old 11-27-2020, 06:19 PM
Hot Runr Guy Hot Runr Guy is offline
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You really only need a single duplex outlet, with the break-off tab removed, and wired in a shared-neutral configuration. This will give you (2) separate 15 (or 20) amp circuits, just make sure you wire the (2) hots to a 2-pole breaker, so they use different busses.

HRG
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Old 11-27-2020, 08:45 PM
rzep rzep is offline
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Always good idea to check local codes first. I know I have mostly 20A circuits in the kitchen. If it is a choice between 15 and 20, I see not reason not to go 20 as long as you use correct rating outlets and wires.
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Old 11-27-2020, 09:39 PM
Ndstallmann Ndstallmann is offline
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If it a dedicated circuit , the outlet must match the breaker.
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Old 11-27-2020, 09:42 PM
rzep rzep is offline
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the wires, outlet and breaker all have to match ..Having 15a breaker on 20 am wires/outlet would not be harm but would defeat the 20 amp purpose.

Last edited by rzep; 11-27-2020 at 09:45 PM.
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Old 11-27-2020, 10:00 PM
REW REW is offline
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In the kitchen, I would certainly run only 20 amp circuits.

You can use a 20 amp duplex plug with the jumper removed as HRG illustrated and you will be good to go.

You only need one wire with multiple conductors to accomplish the task.

Best wishes.
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Old 11-28-2020, 11:19 AM
port1042 port1042 is offline
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Thanks for the advice. My question is: "Is there an advantage to installing a 15amp circuit rather than a 20amp circuit?"
Other than the cost of wire (breakers seem to be a wash) and a slight cost increase for outlets and switches, is there a reason to use 15amp circuits?
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Old 11-28-2020, 11:54 AM
Hot Runr Guy Hot Runr Guy is offline
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Quote:
Originally Posted by port1042 View Post
Thanks for the advice. My question is: "Is there an advantage to installing a 15amp circuit rather than a 20amp circuit?"
Other than the cost of wire (breakers seem to be a wash) and a slight cost increase for outlets and switches, is there a reason to use 15amp circuits?
Not that I can think of, since most 20 amp outlets are dual compatible to both 15 & 20 amp plugs.

IMO, on outlets that I anticipate getting a lot of use, or will tend to carry a higher-amperage load, I spend a little extra and buy better outlets, like these: https://www.leviton.com/en/products/5352-w

HRG
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Old 11-28-2020, 01:17 PM
3M TA3 3M TA3 is offline
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Be sure to use the appropriate wire. #14 for 15 Amp, #12 for 20 Amp. #12 won't fit in spring connects on 15 Amp so screw terminals would have to be used. Since your run will be only about 10 feet as you stated and the circuits will be dedicated for single use, I'd just go ahead and use 20 Amp outlet wired as HRG suggested, using #12 wire and 20 Amp circuit breakers. You'd probably only save a buck or two if you decided 15 Amp was the way you decided to go.

Also note by the way, that the 15 Amp outlet is designed for #14 wire and really should be protected by a 15 Amp breaker, not a 20 Amp. Does all this seem redundant?
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Old 11-28-2020, 02:25 PM
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Surely you know this, but everything most likely needs to also be GFI protected?
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