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Fuzzy_Chom t1_iy98hmm wrote

Technically it'll work However, a few code issues...

  1. your dishwasher needs to be on a GFCI, so change that.

  2. NEC actually allows disposals to not be on a GFCI, due to false trips. This suggests not sharing a circuit between the two. Now, multi wire branch circuit is common to feed a disposal and dishwasher, from two different poles at the panel and share an neutral. But this is done with 12/3 from the source -- something i suspey you already knew.

We just redid our kitchen, and had a MWBCn feeding our dishwasher, light over the sink, and disposal. I ended up running a new dedicated 12/2 service to the disposal, and glad i did.

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Ok_Television_9348 t1_iy9k24j wrote

Dishwasher itself doesn’t require a GFCI. Only the receptacle does. If it’s hardwired, no GFCI is needed.

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dominus_aranearum t1_iy9hlb8 wrote

>NEC actually allows disposals to not be on a GFCI, due to false trips

You raise a good point and are technically correct. Still a good idea anyhow.

While I wouldn't personally put both a dishwasher and disposal on the same circuit, as long as the draw from both don't add up to more than 80% of the rating of the circuit, they can be combined.

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