tryinghard
Senior Member
- Location
- California
Hey resi guy?s what?s your code input if I have the dish & garb (typical install with cords to a recept), and meet the criteria of 430.53 am I compliant with one 20A supply circuit?
Depends on the residence... and the equipment... See also 210.21, and 210.23~IMO you'll rarely run into that problem in a residence.
am I compliant with one 20A supply circuit?
1/2hp = 9.8A
No just a sticker lable 1/2hp, the manufacture spec is 6.5A "average amps"Thats from T430.248. No amps on the name plate?
No just a sticker lable 1/2hp, the manufacture spec is 6.5A "average amps"
"Average" amps because it draws more when chewing up steak than when it's chewing up cucumbers?
Chucking cukes down the disposal, I can understand.
But steaks?????? :-?
Reminds me of a funny story a plumber told me. He got a call from a lady who went just a bit overboard using her disposer. He tried snaking the line to no avail. Anyway, it tuns out she used the thing so much in one episode she packed her waste lines solid. The plumber had to cut them all out and start over.
Even then, I think a single 20a circuit would out-perform a pair of 15a circuits, due to simple load diversity.Lately I have seen a couple of high end diswashers that draw over 10 amps but I've not seen a resi disp over 1 HP.
From: Ed Fox
I recently received the following email from an electrical contractor:
Ed
I have an interpretation question regarding Article 210.23 (2) – Utilization Equipment Fastened in Place.
The total rating of utilization equipment fastened in place, other than luminaires (lighting fixtures), shall not
exceed 50 percent of the branch-circuit ampere rating where lighting units, cord-and-plug-connected
utilization equipment not fastened in place, or both, are also supplied.
Normally, our company policy has been that we supply both the dishwasher and disposal with dedicated
circuits. With dishwashers typically less then 10 amps and disposals typically less then 7 amps, I would not
exceed the total ampere rating by combining the two appliances on one branch circuit. Since nothing else is
being supplied on that circuit, I believe we would meet code requirements. I have looked through related
articles in 240, 422, and 430 and find nothing contradicting this.
So my question to you is: Am I missing something or am I misinterpreting article 210.23?
Thanks for your time and consideration.
Heads up Electric
After researching the same articles my interpretation of article 210.23 is that you are correct. If you have a
dishwasher with a 10 amps maximum and a disposal that is less then 7 amps you could put them on the
same 20 amp branch circuit.
In these economic trying times everyone is trying to save a buck when they can. In knowing how to apply the
code sometimes you can accomplish it.