|
Home > Archive > Electrical Engineering > June 2006 > available voltage
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
|
|
| drman42 2006-06-25, 3:25 am |
| Our activities building has 120/208v 3ph. We want to put a household
chlothes dryer in. Most dryers require 120v for the motor and 220v for
the element. Can this type of dryer be run on 208v, or do we have to
buy a dryer specifically designed for 120/208v. Thanks for any help.
drman42
| |
| Rheilly Phoull 2006-06-25, 9:25 am |
| drman42 wrote:
> Our activities building has 120/208v 3ph. We want to put a household
> chlothes dryer in. Most dryers require 120v for the motor and 220v for
> the element. Can this type of dryer be run on 208v, or do we have to
> buy a dryer specifically designed for 120/208v. Thanks for any help.
> drman42
You'll be sweet !!
No problems with that one.
--
Cheers ......... Rheilly P
Where theres a will, I want to be in it.
| |
| gfretwell@aol.com 2006-06-25, 1:25 pm |
| On 24 Jun 2006 21:21:55 -0700, "drman42" <dchesnut@aol.com> wrote:
>Our activities building has 120/208v 3ph. We want to put a household
>chlothes dryer in. Most dryers require 120v for the motor and 220v for
>the element. Can this type of dryer be run on 208v, or do we have to
>buy a dryer specifically designed for 120/208v. Thanks for any help.
>drman42
It will work but the element will run at a lower power so it will take
a little longer. The L/N voltage is the same so the motor will be
fine.
| |
| Beachcomber 2006-06-25, 1:25 pm |
| On Sun, 25 Jun 2006 17:07:37 +0800, "Rheilly Phoull"
<Rheilly@bigpong.com> wrote:
>drman42 wrote:
>
Conversion kits are available to make at least some 240V. Dryers run
on 208V. I found a reference to at least one mfg. in this Maytag .pdf
file:
http://image.maytag.com/cust_serv/p...l/6_3716990.pdf
My guess is that many builders/owners who have 208V. service overlook
this step. I once lived in a condo with 120/208 V. service and the
laundry equipment was included in the package. Unfortunately, the
developer had purchased all 240 V. dryers and no conversion kits.
I recall it taking well over an hour to dry a load of laundry. This
really bit the big one. Although the motor worked fine (US dryers
have 120V. motors), the heating element could never reach its maximum
rated wattage because of the lower voltage at 208. Remember that
the power developed across a resistive load is V squared over R so you
can see that this kind of reduction in available power is quite
dramatic.
Beachcomber
| |
|
| Use a small buck/boost xformer.
"drman42" <dchesnut@aol.com> wrote in message
news:1151209315.597607.211280@i40g2000cwc.googlegroups.com...
Our activities building has 120/208v 3ph. We want to put a household
chlothes dryer in. Most dryers require 120v for the motor and 220v for
the element. Can this type of dryer be run on 208v, or do we have to
buy a dryer specifically designed for 120/208v. Thanks for any help.
drman42
| |
| gfretwell@aol.com 2006-06-25, 9:25 pm |
| On Sun, 25 Jun 2006 18:59:19 -0500, "Brian" <nobody@yahoo.com> wrote:
>Use a small buck/boost xformer.
>
>
>"drman42" <dchesnut@aol.com> wrote in message
>news:1151209315.597607.211280@i40g2000cwc.googlegroups.com...
>Our activities building has 120/208v 3ph. We want to put a household
>chlothes dryer in. Most dryers require 120v for the motor and 220v for
>the element. Can this type of dryer be run on 208v, or do we have to
>buy a dryer specifically designed for 120/208v. Thanks for any help.
>drman42
>
Since the only 240v load is the heater element you could just cut off
a piece. The appliance parts store sells the element as a replacement
part if you don't want to screw with computing the right length.
| |
| Don Kelly 2006-06-26, 3:25 am |
| ----------------------------
"Beachcomber" <invalid@notreal.none> wrote in message
news:449ec1bd.1192312@news.verizon.net...
> On Sun, 25 Jun 2006 17:07:37 +0800, "Rheilly Phoull"
> <Rheilly@bigpong.com> wrote:
>
>
> Conversion kits are available to make at least some 240V. Dryers run
> on 208V. I found a reference to at least one mfg. in this Maytag .pdf
> file:
>
> http://image.maytag.com/cust_serv/p...l/6_3716990.pdf
>
> My guess is that many builders/owners who have 208V. service overlook
> this step. I once lived in a condo with 120/208 V. service and the
> laundry equipment was included in the package. Unfortunately, the
> developer had purchased all 240 V. dryers and no conversion kits.
>
> I recall it taking well over an hour to dry a load of laundry. This
> really bit the big one. Although the motor worked fine (US dryers
> have 120V. motors), the heating element could never reach its maximum
> rated wattage because of the lower voltage at 208. Remember that
> the power developed across a resistive load is V squared over R so you
> can see that this kind of reduction in available power is quite
> dramatic.
>
> Beachcomber
---------------------------
But, while the temperature is lower, very often the dryer is run at medium
heat so simpl go to max heat for less time than normal--or-- run a bit
longer as you will not use more energy (losses included).
A typical load on medium heat takes about 40 minutes at 240V and about 53
minutes at 208V. Is this critical? How often do you sit there anxiously
waiting for the clothes to dry?
--
Don Kelly dhky@shawcross.ca
remove the X to answer
>
>
>
>
|
|
|
|
|