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AC Electrical Question Andrew Taylor 07-22-2006
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Posted by Andrew Taylor on July 22, 2006, 10:47 pm
The heat has motivated me to have central air installed at my home. I am
trying to avoid getting ripped off on the electrical part of the job.

My understanding is that central air conditioning units generally pull
about 30 amps, depending on the size. At any rate, when I look at my
electrical service box, there are two 20 amp breakers that are unused.
Is it easy to somehow combine these two to support the needs of the
central air? Should the contractor that installs the AC be able to
handle this as a standard part of the job, or am I looking at additional
expenses?

Thanks.

Posted by Stormin Mormon on July 22, 2006, 11:06 pm
The installer will most likely remove one or both of the 20 amp
breakers, and put in a double pole 20 if you're getting 2 tons, and a
double 30 for 2.5 tons.

I can't comment on your part of the world, but the company I work for
does this kind of work on a regular basis, and it isn't an add on
cost. There are other factors which are much more important than a
couple breaker slots in your electric box.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.

The heat has motivated me to have central air installed at my home. I
am
trying to avoid getting ripped off on the electrical part of the job.

My understanding is that central air conditioning units generally pull
about 30 amps, depending on the size. At any rate, when I look at my
electrical service box, there are two 20 amp breakers that are unused.
Is it easy to somehow combine these two to support the needs of the
central air? Should the contractor that installs the AC be able to
handle this as a standard part of the job, or am I looking at
additional
expenses?

Thanks.



Posted by Noon-Air on July 23, 2006, 12:04 am

> The heat has motivated me to have central air installed at my home. I am
> trying to avoid getting ripped off on the electrical part of the job.

Don't worry about it, the A/C contractor will handle it....it should already
be part of his total install price.

> My understanding is that central air conditioning units generally pull
> about 30 amps, depending on the size.

Depending on the capacity of the unit, the required circuit and breaker will
normally be anywhere from 20 - 60 amps.

> At any rate, when I look at my electrical service box, there are two 20
> amp breakers that are unused.

They won't be there anymore.

> Is it easy to somehow combine these two to support the needs of the
> central air?

no, new ones that are correctly sized for the wire and units will be
installed.

>Should the contractor that installs the AC be able to handle this as a
>standard part of the job,

yes

>or am I looking at additional expenses?

Only if you get in the way and become a PITA by trying to second guess the
professionally trained technician that is actually doing the job.

> Thanks.



Posted by Andrew Taylor on July 23, 2006, 2:06 am
Thanks, for answering my question. I'll strive not to become a PITA ;>

Noon-Air wrote:

>
>>The heat has motivated me to have central air installed at my home. I am
>>trying to avoid getting ripped off on the electrical part of the job.
>
>
> Don't worry about it, the A/C contractor will handle it....it should already
> be part of his total install price.
>
>
>>My understanding is that central air conditioning units generally pull
>>about 30 amps, depending on the size.
>
>
> Depending on the capacity of the unit, the required circuit and breaker will
> normally be anywhere from 20 - 60 amps.
>
>
>>At any rate, when I look at my electrical service box, there are two 20
>>amp breakers that are unused.
>
>
> They won't be there anymore.
>
>
>>Is it easy to somehow combine these two to support the needs of the
>>central air?
>
>
> no, new ones that are correctly sized for the wire and units will be
> installed.
>
>
>>Should the contractor that installs the AC be able to handle this as a
>>standard part of the job,
>
>
> yes
>
>
>>or am I looking at additional expenses?
>
>
> Only if you get in the way and become a PITA by trying to second guess the
> professionally trained technician that is actually doing the job.
>
>
>>Thanks.
>
>
>

Posted by Dido on July 23, 2006, 11:11 am
simple answer to you is NO you can not combine,
however? yes you can change circuit breaker to higher amperage,
that is? If you main source main supply can handle it,
your contractor should be able tell you that.
Bit of advice don't cheat on power supply and
specially if you are in area where power is always
some what low to start with.
good luck from Dido


> The heat has motivated me to have central air installed at my home. I am
> trying to avoid getting ripped off on the electrical part of the job.
>
> My understanding is that central air conditioning units generally pull
> about 30 amps, depending on the size. At any rate, when I look at my
> electrical service box, there are two 20 amp breakers that are unused. Is
> it easy to somehow combine these two to support the needs of the central
> air? Should the contractor that installs the AC be able to handle this as
> a standard part of the job, or am I looking at additional expenses?
>
> Thanks.



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