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Dryer 4 wire to 3 wire plug Lou 09-22-2007
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Posted by tony on September 23, 2007, 9:13 am
Some how something is not right
? why manufacture would use 4 prong plug on 120 ac
unless is this unit 220/3/60 and is it commercial grade
???????????????????????????????????/ Tony


> Just bought a used dryer much newer than the old one.
> Need to replace 4 prong plug with 3 prong. I know I will be replacing the
> whole wire at the dryer end.
> A site with pictures or advice from folks in the know?
>
> TIA
>
> Lou



Posted by Lou on September 23, 2007, 9:50 am
tony wrote:
> Some how something is not right
> ? why manufacture would use 4 prong plug on 120 ac
> unless is this unit 220/3/60 and is it commercial grade
> ???????????????????????????????????/ Tony
>
>
>> Just bought a used dryer much newer than the old one.
>> Need to replace 4 prong plug with 3 prong. I know I will be replacing the
>> whole wire at the dryer end.
>> A site with pictures or advice from folks in the know?
>>
>> TIA
>>
>> Lou
>
>
All dryers are 208/220 for efficiency. You need the voltage to get the
amps for the heat. 4 wire is safer than 3 wire but is same voltage.

Lou

Posted by Edwin Pawlowski on September 23, 2007, 10:43 am

> Some how something is not right
> ? why manufacture would use 4 prong plug on 120 ac
> unless is this unit 220/3/60 and is it commercial grade
> ???????????????????????????????????/ Tony
>

That is now the code. Two hots, neutral, ground. Used to be the 110V
controls could use the ground as a neutral.

Note: It is not 120V, normal dryers use 220V There may be some small
portable units that use 120V.



Posted by Sam E on September 23, 2007, 2:23 pm
wrote:

>
>> Some how something is not right
>> ? why manufacture would use 4 prong plug on 120 ac
>> unless is this unit 220/3/60 and is it commercial grade
>> ???????????????????????????????????/ Tony
>>
>
>That is now the code. Two hots, neutral, ground. Used to be the 110V
>controls could use the ground as a neutral.
>
>Note: It is not 120V, normal dryers use 220V There may be some small
>portable units that use 120V.
>

Note: the higher voltage is always twice the lower one, an in 110/220
or 120/240.

Posted by Lou on September 24, 2007, 10:31 am
Sam E wrote:
> wrote:
>
>>> Some how something is not right
>>> ? why manufacture would use 4 prong plug on 120 ac
>>> unless is this unit 220/3/60 and is it commercial grade
>>> ???????????????????????????????????/ Tony
>>>
>> That is now the code. Two hots, neutral, ground. Used to be the 110V
>> controls could use the ground as a neutral.
>>
>> Note: It is not 120V, normal dryers use 220V There may be some small
>> portable units that use 120V.
>>
>
> Note: the higher voltage is always twice the lower one, an in 110/220
> or 120/240.

I am the OP

Today I switched the wires and found the dryer was set up for 3 wire.
The ground strap WAS attached and the 4 wire had twp wires going to the
ground strap lug in the center. Appears the dryer was made for 3 wire.
I attached my wire from the old dryer the same as it was attached in the
old dryer.

Lou

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