Single Home Run for a Washer and a Dryer?


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Old 08-27-14, 04:20 PM
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Single Home Run for a Washer and a Dryer?

I need to Install a new home run to breaker panel for a separate washer and a gas dryer
The old circuit has too much other stuff on it.
Do I need separate home runs for each -or is one 20 amp circuit ok for both?
If EACH require it's own breaker, can/should I use 12/3 instead of two 12/2 Romex?
Are GFI(s) required in this basement installation?
 
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Old 08-27-14, 04:28 PM
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I single 20amp circuit is fine. GFCI required if unfinished basement or within 6' of a sink/tub. Or on 2014 NEC and could need AFCI as well.

I like running a MWBC with 12/3 which needs two GFCIs and a 2-pole breaker or handle-tied together. I like it because then you can plug in an iron without worry.
 
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Old 08-27-14, 07:03 PM
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Astuff, Thanks for your prompt reply!
 
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Old 08-27-14, 07:47 PM
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Do I need separate home runs for each -or is one 20 amp circuit ok for both?
you need 2 20 amp circuits...........12-2 wg NM

A LARGE WASHER AND A LARGE DRYER CAN PULL OVER 1600 WATTS

If EACH require it's own breaker, can/should I use 12/3 instead of two 12/2 Romex?
NO.........can't put AFCI ON 12-3........i would say 12-3 split circuits are a thing of the past....when you go to the 2014 NEC

you can plug in an iron without worry.
if you want to..... iron ..... and .... wash ..... and ..... dry ..... at the same time................run 3 circuits.
 
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Old 08-28-14, 12:20 AM
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The NEC only requires one 20 amp circuit for the laundry. You can more if you wish but are not required to.
 
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Old 08-28-14, 07:38 AM
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A LARGE WASHER AND A LARGE DRYER CAN PULL OVER 1600 WATTS
- for a 20amp circuit 20*120=2400VA. Even if you use the 80% rule (which doesn't apply here for the total load) you still have 1920VA. Maybe a washer/dryer combo with steam would push this but not the ones I have seen.

NO.........can't put AFCI ON 12-3
AFCIs can limit you but 2 pole AFCIs are available for Siemens/Murray and Eaton/Cutler Hammer. GE lets you tie two single-pole afcis together.
 
 

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