General Home Automation 240 to 120 Conversion ?

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Subject Author Date
240 to 120 Conversion ? Steve Vorres 03-23-05
Posted by Steve Vorres on March 23, 2005, 5:07 pm
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Sorry if this is slightly off topic.
Has anyone had experience with this problem ?
I'm planning on connecting a 120Vac 20 amp hot tub .
I would like to connect it to a 240V 60 amp Airconditioning outlet .
Can I connect the 120 V hot black lead to the 240 V hot black via a 20
amp breaker
then I connect the 120V neutral white lead to the 240V red ground lead
and connect the 120 V gnd green lead to the 240 V conduit


I will use a 20 amp breaker to protect the 20 amp outlet which is a GFI
outlet.

any suggestions are appreciated.

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Posted by brobin on March 24, 2005, 1:56 am
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I commend you for posting the question before forging ahead with your plan
and please don't be offended, but it's obvious from your description that
you don't know what you're doing and you don't understand how 120/240 is
wired. My best advice to you is to be safe and hire an electrician. The
black wire in the outlet is 120 volts and the red wire is 120 volts - NOT
gorund! Measure with a meter if you have one. If the 240 volt outlet (if
indeed that's what it is) has 3 prongs you have 120-120 and ground but NO
NEUTRAL! Doing what you propose will not only burn out the motor but violate
the electrical code. Since you'll be sitting IN A TUB OF WATER please
ensure that the job is done to code and don't take chances. Again, I mean
no offense and hope you'll take this advice to heart.


> Sorry if this is slightly off topic.
> Has anyone had experience with this problem ?
> I'm planning on connecting a 120Vac 20 amp hot tub .
> I would like to connect it to a 240V 60 amp Airconditioning outlet .
> Can I connect the 120 V hot black lead to the 240 V hot black via a 20
> amp breaker
> then I connect the 120V neutral white lead to the 240V red ground lead
> and connect the 120 V gnd green lead to the 240 V conduit
>
>
> I will use a 20 amp breaker to protect the 20 amp outlet which is a GFI
> outlet.
>
> any suggestions are appreciated.
>




Posted by Ida Slapter on March 24, 2005, 2:23 am
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wrote:

>I'm planning on connecting a 120Vac 20 amp hot tub .
>I would like to connect it to a 240V 60 amp Airconditioning outlet .

Make sure your fire insurance premium is paid in full....since you are
asking for more than a hot tub...you are going to have a raging HOT
house.....or had one!


Hire a licensed electrician. They KNOW what they are doing.




Posted by John O on March 24, 2005, 5:07 pm
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> any suggestions are appreciated.

Same opinion, different person...
You can get from that outlet to run your hot tub, but don't even think about
doing it yourself. The tub of water is key, because if you screw up, someone
can die. And there are lots of ways to screw this up, some of which you'd
never imagine.

Don't take the chance...hire a pro for this job. It will be worth every
penny to know your family is safe.

John O




Posted by B Fuhrmann on March 24, 2005, 11:26 am
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> Same opinion, different person...
> You can get from that outlet to run your hot tub, but don't even think
> about doing it yourself. The tub of water is key, because if you screw up,
> someone can die. And there are lots of ways to screw this up, some of
> which you'd never imagine.

That is one of the best answers I have seen.

It is possible.
It doesn't take a rocket scientist to do it.
Screwing it up is easy if you don't know what you are doing.
Screwing it up can kill.

The original post indicates that the poster is far from the knowledge needed
to do it, even if water was not involved.

Water and electricity need special considerations to keep people safe.

This is something that I could do easily.
This is something that I could lead someone through it with a lot of
conversations and the ability to see (in person) what they are doing
periodically.
There is no way to lead someone through this via e-mail.

--
Bill Fuhrmann




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