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12 amp wire size Henry 07-09-2007
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Posted by Henry on July 9, 2007, 5:42 pm
I was wondering what cable size to use for wiring a 125V 12 amp fan that is
100 feet away from the breaker panel.

Thanks.

Posted by Rich on July 9, 2007, 5:53 pm
Henry wrote:
> I was wondering what cable size to use for wiring a 125V 12 amp fan
> that is 100 feet away from the breaker panel.
>
> Thanks.

http://www.wiktel.com/standards/wiresize.htm

Rich



Posted by Jeff Wisnia on July 9, 2007, 6:00 pm
Henry wrote:
> I was wondering what cable size to use for wiring a 125V 12 amp fan that is
> 100 feet away from the breaker panel.
>
> Thanks.


You should be able to use 14 gauge wire.

It'll drop about 4 volts at 12 amps over that length, but that shouldn't
worry a fan much.

HTH,

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.


Posted by Toller on July 9, 2007, 6:07 pm

> Henry wrote:
>> I was wondering what cable size to use for wiring a 125V 12 amp fan that
>> is 100 feet away from the breaker panel.
>>
>> Thanks.
>
>
> You should be able to use 14 gauge wire.
>
> It'll drop about 4 volts at 12 amps over that length, but that shouldn't
> worry a fan much.
>
You could use #14, but there will be a lot of VD at startup, which won't be
too good for the fan.
#12 isn't all that much more expensive.



Posted by dpb on July 9, 2007, 6:10 pm
Toller wrote:
>> Henry wrote:
>>> I was wondering what cable size to use for wiring a 125V 12 amp fan that
>>> is 100 feet away from the breaker panel.
>>>
>>> Thanks.
>>
>> You should be able to use 14 gauge wire.
>>
>> It'll drop about 4 volts at 12 amps over that length, but that shouldn't
>> worry a fan much.
>>
> You could use #14, but there will be a lot of VD at startup, ...

How did you determine that, and how much, specifically, are you thinking
is "a lot" for a fractional hp fan motor???

> #12 isn't all that much more expensive.

That's true, certainly, and I have pretty much quit using 14, but if
it's a dedicated circuit I don't think there's a chance in the world the
difference would make any practical difference at all.

If, otoh, there's a chance of wanting something else, that would
necessitate it in all likelihood.

--

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