Clothes dryer is wired with 12/3 with ground


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Old 01-09-15, 10:57 PM
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Clothes dryer is wired with 12/3 with ground

I am renovating my basement and one of the first steps I need to move my washer and dryer.

Was looking things over to figure out the fittings, boxes, lengths of wire, etc. I need and noticed that the dryer is wired with 12/3 with a ground.

It is on a 30 amp breaker. It looks like a two pole (not sure if they all are).

Is there any valid reason this would be done like this?
 
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Old 01-10-15, 01:10 AM
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If it's an electric dryer it needs 30A@240v.
It should be wired with 10/3 w/gr on a 2P30Amp breaker.

#12 wire is only rated for 20Amps max.
 
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Old 01-10-15, 05:11 AM
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Is there any valid reason this would be done like this?
The unknowing, leading the unskilled, to do a simple task, with unwanted results. Do as Pete suggests and rewire it with the proper cable/wire.
 
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Old 01-10-15, 05:18 AM
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Yes, its an electric dryer. Sorry forgot to mention that.

It funny because every time I looked at the wire (Romex) I assumed it was 10 wire. Because the casing is thick. Much thicker than any 12/3 I have used. So I never thought twice.

It was only when I looked closely did I see the casing says 12/3.
 
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Old 01-10-15, 06:29 AM
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Using more modern cabling, 10 will be orange in color, whereas 12 will be yellow and 14 white.
 
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Old 01-10-15, 08:38 AM
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I have a bunch of stranded wire that is 8 awg. I will run this in conduit. I can use stranded for this, right?

Its actually installed on two single pole 30 amp breakers. Is that ok?

And looking in the box it seems it is so thick because the paper insulation (the braided stuff inside) is so much thicker than the other 12/3. they are both original wiring, about 60 years old, but I guess some manufacturers just made them slightly differently.
 
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Old 01-10-15, 08:41 AM
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Its actually installed on two single pole 30 amp breakers. Is that ok?
No, not even if handle tied. It must be on a two pole breaker so there is a common trip.
 
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Old 01-10-15, 03:26 PM
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Stranded is fine. #8 will be a PITA to bend and cap in the little peckerhead box on the water heater, but not against code at all. What Ray said on the breaker.
 
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Old 01-10-15, 05:34 PM
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Ok I sprung for the $75 for 50 feet of 10/3 with ground. It will be so much faster and easier than running the conduit.
 
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Old 01-10-15, 06:17 PM
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Old 01-11-15, 06:06 AM
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Hmmm. $23 off when buying online and free shipping. But Id have to wait a week and need to move this dryer because it is in my way for other tasks that are building up.

I may choose to wait the week an just slide it over. It'll be a little in the way, but maybe worth it.

Thanks for the info.
 
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Old 01-11-15, 06:16 AM
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If you bought it at a E supply house you may not be able to return.
Geo
 
 

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