Subject: Re: [Shop-talk] Extension cord length vs. wire gauge

From: Jeff Scarbrough <[email-masked]>
Date: Tue, 30 Oct 2018 21:13:14 -0400

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On Oct 30, 2018 8:57 PM, "Scott Hall" <[email-masked]> wrote:

Guys,

I need about 300 get of extension cord. 16 AWG was fine at 100 ft. Can I
string 3 of those together without a problem, or should I go up a size?
Draw is 4 amps.

What sort of load? Resistive, or ?

What sort of duty cycle?

What sort of duration?

In general, it's probably ok, but still wouldn't hurt to have some details.

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<div dir=3D"auto"><div><br><div class=3D"gmail_extra"><br><div class=3D"gma=
il_quote">On Oct 30, 2018 8:57 PM, &quot;Scott Hall&quot; &lt;<a href=3D"ma=
ilto:[email-masked]">[email-masked]</a>&gt; w=
rote:<br type=3D"attribution"><blockquote class=3D"quote" style=3D"margin:0=
 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"auto">Gu=
ys,<div dir=3D"auto"><br></div><div dir=3D"auto">I need about 300 get of ex=
tension cord. 16 AWG was fine at 100 ft. Can I string 3 of those together w=
ithout a problem, or should I go up a size? Draw is 4 amps.</div></div></bl=
ockquote></div></div></div><div dir=3D"auto"><br></div><div dir=3D"auto">Wh=
at sort of load? Resistive, or ?</div><div dir=3D"auto"><br></div><div dir=
=3D"auto">What sort of duty cycle?</div><div dir=3D"auto"><br></div><div di=
r=3D"auto">What sort of duration?</div><div dir=3D"auto"><br></div><div dir=
=3D"auto">In general, it&#39;s probably ok, but still wouldn&#39;t hurt to =
have some details.</div><div dir=3D"auto"></div><div dir=3D"auto"><div clas=
s=3D"gmail_extra"><br></div></div></div>

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_______________________________________________

[email-masked]
Archive: http://www.team.net/pipermail/shop-talk

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From: Scott Hall <[email-masked]>
Date: Tue, 30 Oct 2018 20:18:18 -0500

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Sigh. I have to admit this in a public forum?

It's a power tool. Comparable to a chainsaw. I wanted the gas version, but
I'll use it maybe twice a year, it's $40 vs. $200, and the electric one is
about half the weight.

I never thought I'd be the sort of person to own one of these, but here I
am...

> In general, it's probably ok, but still wouldn't hurt to have some details.

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<div dir=3D"auto"><div>Sigh. I have to admit this in a public forum?</div><=
div dir=3D"auto"><br></div><div dir=3D"auto">It&#39;s a power tool. Compara=
ble to a chainsaw. I wanted the gas version, but I&#39;ll use it maybe twic=
e a year, it&#39;s=C2=A0<span class=3D"money">$40</span>=C2=A0vs. <span cla=
ss=3D"money">$200,</span>=C2=A0and the electric one is about half the weigh=
t.</div><div dir=3D"auto"><br></div><div dir=3D"auto">I never thought I&#39=
;d be the sort of person to own one of these, but here I am...</div><div di=
r=3D"auto"><br><div class=3D"gmail_quote" dir=3D"auto"><div dir=3D"ltr">On =
Tue, Oct 30, 2018, 8:13 PM Jeff Scarbrough &lt;<a href=3D"mailto:fishplate@=
gmail.com">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D=
"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding=
-left:1ex"><div dir=3D"auto"><div><br><div class=3D"gmail_extra"><br><div c=
lass=3D"gmail_quote">On Oct 30, 2018 8:57 PM, &quot;Scott Hall&quot; &lt;<a=
 href=3D"mailto:[email-masked]" target=3D"_blank" rel=3D"nor=
eferrer">[email-masked]</a>&gt; wrote:<br type=3D"attributio=
n"><blockquote class=3D"m_1103196133563860000quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"auto">Guys,<di=
v dir=3D"auto"><br></div><div dir=3D"auto">I need about 300 get of extensio=
n cord. 16 AWG was fine at 100 ft. Can I string 3 of those together without=
 a problem, or should I go up a size? Draw is 4 amps.</div></div></blockquo=
te></div></div></div><div dir=3D"auto"><br></div><div dir=3D"auto">What sor=
t of load? Resistive, or ?</div><div dir=3D"auto"><br></div><div dir=3D"aut=
o">What sort of duty cycle?</div><div dir=3D"auto"><br></div><div dir=3D"au=
to">What sort of duration?</div><div dir=3D"auto"><br></div><div dir=3D"aut=
o">In general, it&#39;s probably ok, but still wouldn&#39;t hurt to have so=
me details.</div><div dir=3D"auto"></div><div dir=3D"auto"><div class=3D"gm=
ail_extra"><br></div></div></div>
</blockquote></div></div></div>

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[email-masked]

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From: John Innis <[email-masked]>
Date: Tue, 30 Oct 2018 20:39:05 -0500

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Depends on what you are going to do with it.  300' of 16awg drawing 4a will
drop about 9.5v.  Most things won't care about that low of a voltage drop.
But consider that you are loosing about 8% over that distance.  Also
consider surge loads like motors starting and such.  Powering a few lights,
no problem.  Starting a motor (like a drill or fridge compressor), might be
an issue.  If the motor start current is double the running current, you
now have a drop of over 19v this is a big hit.  By contrast, moving up to
14 gauge will get you down to about 6v drop or only 5% loss steady state
and 12v drop surge.  Might be worth it if you have larger surge loads and
equipment that cares.

On Tue, Oct 30, 2018 at 7:57 PM Scott Hall <[email-masked]>
wrote:

> Thanks,
> Scott
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.96
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/shop-talk/[email-masked]
>
>

-- 
=================================
= Never offend people with style when you   =
= can offend with substance --- Sam Brown  =
=================================

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<div dir=3D"ltr">Depends on what you are going to do with it.=C2=A0 300&#39=
; of 16awg drawing 4a will drop about 9.5v.=C2=A0 Most things won&#39;t car=
e about that low of a voltage drop.=C2=A0 But consider that you are loosing=
 about 8% over that distance.=C2=A0 Also consider surge loads like motors s=
tarting and such.=C2=A0 Powering a few lights, no problem.=C2=A0 Starting a=
 motor (like a drill or fridge compressor), might be an issue.=C2=A0 If the=
 motor start current is double the running current, you now have a drop of =
over 19v this is a big hit.=C2=A0 By contrast, moving up to 14 gauge will g=
et you down to about 6v drop or only 5% loss steady state and 12v drop surg=
e.=C2=A0 Might be worth it if you have larger surge loads and equipment tha=
t cares.<br></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Tue, O=
ct 30, 2018 at 7:57 PM Scott Hall &lt;<a href=3D"mailto:scott.hall.personal=
@gmail.com">[email-masked]</a>&gt; wrote:<br></div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc so=
lid;padding-left:1ex"><div dir=3D"auto">Guys,<div dir=3D"auto"><br></div><d=
iv dir=3D"auto">I need about 300 get of extension cord. 16 AWG was fine at =
100 ft. Can I string 3 of those together without a problem, or should I go =
up a size? Draw is 4 amps.</div><div dir=3D"auto"><br></div><div dir=3D"aut=
o">Thanks,=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto">Scott</=
div></div>
_______________________________________________<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">Shop-talk@aut=
ox.team.net</a><br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/shop-talk" rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/pipermail/shop-talk</a><br>
<br>
alk/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.te=
am.net/mailman/options/shop-talk/[email-masked]</a><br>
<br>
</blockquote></div><br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"g=
mail_signature" data-smartmail=3D"gmail_signature">=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
<br>=3D Never offend people with style when you=C2=A0=C2=A0 =3D<br>=3D can =
offend with substance --- Sam Brown=C2=A0 =3D<br>=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
</div>

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[email-masked]

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From: Ian McFetridge <[email-masked]>
Date: Tue, 30 Oct 2018 22:04:21 -0400

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What=E2=80=99s it powering and will it mind the voltage drop?
10 AWG will drop 3%
12 AWG will drop 5%
14 AWG is not recommended, so I assume 16 is definitely not recommended.
Here=E2=80=99s the online calculator I=E2=80=99ve used
http://www.paigewire.com/pumpWireCalc.aspx?AspxAutoDetectCookieSupport=3D1

Best,
Ian

> string 3 of those together without a problem, or should I go up a size?

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<div><div dir=3D"auto">What=E2=80=99s it powering and will it mind the volt=
age drop? =C2=A0</div></div><div dir=3D"auto">10 AWG will drop 3%</div><div=
 dir=3D"auto">12 AWG will drop 5%</div><div dir=3D"auto">14 AWG is not reco=
mmended, so I assume 16 is definitely not recommended.=C2=A0</div><div dir=
=3D"auto">Here=E2=80=99s the online calculator I=E2=80=99ve used</div><div =
dir=3D"auto"><div><a href=3D"http://www.paigewire.com/pumpWireCalc.aspx?Asp=
xAutoDetectCookieSupport=3D1">http://www.paigewire.com/pumpWireCalc.aspx?As=
pxAutoDetectCookieSupport=3D1</a></div><div dir=3D"auto"><br></div><div dir=
=3D"auto">Best,</div><div dir=3D"auto">Ian</div><br></div><div><br><div cla=
ss=3D"gmail_quote"><div dir=3D"ltr">On Tue, Oct 30, 2018 at 8:59 PM Scott H=
all &lt;<a href=3D"mailto:[email-masked]">scott.hall.persona=
[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=
=3D"auto">Guys,<div dir=3D"auto"><br></div><div dir=3D"auto">I need about 3=
00 get of extension cord. 16 AWG was fine at 100 ft. Can I string 3 of thos=
e together without a problem, or should I go up a size? Draw is 4 amps.</di=
v><div dir=3D"auto"><br></div><div dir=3D"auto">Thanks,=C2=A0</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">Scott</div></div>
_______________________________________________<br><br>
<br>
</blockquote></div></div>

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From: Ronnie Day <[email-masked]>
Date: Tue, 30 Oct 2018 21:09:30 -0500

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I'd suggest running some voltage drop calcs for that distance. We always
use 12 AWG for anything over 25 feet.

FWIW,
Ron

On Tue, Oct 30, 2018 at 8:01 PM Scott Hall <[email-masked]>
wrote:

> http://autox.team.net/mailman/options/shop-talk/[email-masked]
>
>

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<div dir=3D"ltr">I&#39;d suggest running some voltage drop calcs for that d=
istance. We always use 12 AWG for anything over 25 feet.<div><br></div><div=
>FWIW,</div><div>Ron</div></div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr">On Tue, Oct 30, 2018 at 8:01 PM Scott Hall &lt;<a href=3D"mailto:scott=
[email-masked]">[email-masked]</a>&gt; wrote:<br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex"><div dir=3D"auto">Guys,<div dir=3D"auto=
"><br></div><div dir=3D"auto">I need about 300 get of extension cord. 16 AW=
G was fine at 100 ft. Can I string 3 of those together without a problem, o=
r should I go up a size? Draw is 4 amps.</div><div dir=3D"auto"><br></div><=
div dir=3D"auto">Thanks,=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D=
"auto">Scott</div></div>
_______________________________________________<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">Shop-talk@aut=
ox.team.net</a><br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/shop-talk" rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/pipermail/shop-talk</a><br>
<br>
alk/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox=
.team.net/mailman/options/shop-talk/[email-masked]</a><br>
<br>
</blockquote></div>

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From: David Hillman <[email-masked]>
Date: Tue, 30 Oct 2018 22:13:33 -0400 (EDT)

> string 3 of those together without a problem, or should I go up a size?

<http://www.paigewire.com/pumpWireCalc.aspx>

    Depends on your allowable voltage drop.  At 3%, this calculator says 
you need 10 gauge.

--
  David Hillman

[email-masked]

---

From: Pat Horne <[email-masked]>
Date: Tue, 30 Oct 2018 21:39:46 -0500

16 awg wire will give you about a 8% drop in voltage. If you are running a light bulb, it should be fine’ just a bit dimmer. If you are running a motor, there is a higher current draw on startup, which can actually not allow the motor to start. Give it a try & see if it starts. If it doesn’t start quickly, turn it off. 

If you have larger awg wire cords available I’d go that route. 

In job sites I don’t run more than 75’ usually but current loads can be as high as 10 amps. The minimum size I use is 12awg & 10awg on longer runs. 

Peace,
Pat

Pat Horne 
We support Caldwell County Habitat for Humanity

On Oct 30, 2018, at 2:54 PM, Scott Hall <[email-masked]> wrote:

Guys,

I need about 300 get of extension cord. 16 AWG was fine at 100 ft. Can I string 3 of those together without a problem, or should I go up a size? Draw is 4 amps.

Thanks, 

Scott

[email-masked]

Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/[email-masked]

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From: Jimmie Mayfield <[email-masked]>
Date: Tue, 30 Oct 2018 22:56:14 -0400

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It comes down to voltage drop.  You generally don't want voltage drop of 
more than around 5%.

At 4 amps, a 100ft 16ga cord is going to have a voltage drop of about 
3.5V.  This is okay.  At 300ft, the voltage drop will be about 9.5V.  
That's unacceptable.  Assuming your equipment still functions, your cord 
would be dissipating around 40W of heat due to internal resistance.

300ft of 14ga cord will have a drop of around 6V.  That's marginal.

12ga cord will have a drop of about 3.75V.  That's okay.

So go with 12ga cord.

J

On 10/30/18 15:54, Scott Hall wrote:
> Guys,
>
> I need about 300 get of extension cord. 16 AWG was fine at 100 ft. Can 
> I string 3 of those together without a problem, or should I go up a 
> size? Draw is 4 amps.
>
> Thanks,
>
> Scott
>
> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/[email-masked]
>

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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p>It comes down to voltage drop.  You generally don't want voltage
      drop of more than around 5%.<br>
    </p>
    <p><br>
    </p>
    <p>At 4 amps, a 100ft 16ga cord is going to have a voltage drop of
      about 3.5V.  This is okay.  At 300ft, the voltage drop will be
      about 9.5V.  That's unacceptable.  Assuming your equipment still
      functions, your cord would be dissipating around 40W of heat due
      to internal resistance.</p>
    <p>300ft of 14ga cord will have a drop of around 6V.  That's
      marginal.</p>
    <p>12ga cord will have a drop of about 3.75V.  That's okay.</p>
    <p>So go with 12ga cord. <br>
    </p>
    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix">J<br>
    </div>
    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix">On 10/30/18 15:54, Scott Hall wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAK73_u6_tAMQw==[email-masked]">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="auto">Guys,
        <div dir="auto"><br>
        </div>
        <div dir="auto">I need about 300 get of extension cord. 16 AWG
          was fine at 100 ft. Can I string 3 of those together without a
          problem, or should I go up a size? Draw is 4 amps.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Thanks, </div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Scott</div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________

<a class="moz-txt-link-abbreviated" href="mailto:[email-masked]">[email-masked]</a>
Archive: <a class="moz-txt-link-freetext" href="http://www.team.net/pipermail/shop-talk">http://www.team.net/pipermail/shop-talk</a>

</pre>
    </blockquote>
    <p><br>
    </p>
  </body>
</html>

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From: Steven Trovato <[email-masked]> mail.com>
Date: Tue, 30 Oct 2018 23:22:14 -0400

There is a lot of guidance out there about 
selecting extension cords.  Here's one:

http://www.diybyexample.info/2010/07/what-size-extension-cord-do-i-need/

Scroll down to the table.  According to that, you 
should go up a couple of sizes.

-Steve T.

At 03:54 PM 10/30/2018, Scott Hall wrote:
>Guys,
>
>I need about 300 get of extension cord. 16 AWG 
>was fine at 100 ft. Can I string 3 of those 
>together without a problem, or should I go up a size? Draw is 4 amps.
>
>Thanks,Â
>
>Scott

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From: Randall <[email-masked]> vYfBZQD43fQy6QrPulbQfhV9HsTMsS7RM3sHIxMzECSVb+RmXfLpc6VDIhlvJgCL0Cc3PP88+aroWQ==
Date: Tue, 30 Oct 2018 22:09:24 -0700

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If I've done my math right, you'll lose about 10 volts=2E So it depends on =
whether your load cares about that much drop=2E In most cases, you should b=
e fine=2E
-- Randall

On 30 October 2018 12:54:15 GMT-07:00, Scott Hall <scott=2Ehall=2Epersonal=
@gmail=2Ecom> wrote:
>Guys,
>
>I need about 300 get of extension cord=2E 16 AWG was fine at 100 ft=2E Ca=
n
>I
>Draw is 4 amps=2E

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<html><head></head><body>If I've done my math right, you'll lose about 10 v=
olts=2E So it depends on whether your load cares about that much drop=2E In=
 most cases, you should be fine=2E<br>-- Randall<br><br><div class=3D"gmail=
_quote">On 30 October 2018 12:54:15 GMT-07:00, Scott Hall &lt;scott=2Ehall=
=2Epersonal@gmail=2Ecom&gt; wrote:<blockquote class=3D"gmail_quote" style=
=3D"margin: 0pt 0pt 0pt 0=2E8ex; border-left: 1px solid rgb(204, 204, 204);=
 padding-left: 1ex;">
<div dir=3D"auto">Guys,<div dir=3D"auto"><br></div><div dir=3D"auto">I nee=
d about 300 get of extension cord=2E 16 AWG was fine at 100 ft=2E Can I str=
ing 3 of those together without a problem, or should I go up a size? Draw i=
s 4 amps=2E</div><div dir=3D"auto"><br></div><div dir=3D"auto">Thanks,&nbsp=
;</div><div dir=3D"auto"><br></div><div dir=3D"auto">Scott</div></div>
</blockquote></div></body></html>
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From: "Neil Sherry" <[email-masked]>
Date: Wed, 31 Oct 2018 08:40:01 -0000

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Comes back to =E2=80=98will it work=E2=80=99 which will depend on the =
device. In some places the utility companies are reducing line voltages =
to save energy =E2=80=93 and stuff still works.

Only issue with the 40W dissipation would be if the cable was still =
coiled up =E2=80=93 then it would build up, melt the insulation and be a =
hazard. Over 300 feet the heat per foot would be negligible =E2=80=93 in =
fact more or less the same as it would be whatever the length of cable =
(actually a bit less, as the current is less due to the combined =
resistance).

Neil

=20

From: Shop-talk <[email-masked]> On Behalf Of Jimmie =
Mayfield
Sent: 31 October 2018 02:56
To: [email-masked]
Subject: Re: [Shop-talk] Extension cord length vs. wire gauge

=20

It comes down to voltage drop.  You generally don't want voltage drop of =
more than around 5%.

=20

At 4 amps, a 100ft 16ga cord is going to have a voltage drop of about =
3.5V.  This is okay.  At 300ft, the voltage drop will be about 9.5V.  =
That's unacceptable.  Assuming your equipment still functions, your cord =
would be dissipating around 40W of heat due to internal resistance.

So go with 12ga cord.=20

=20

J

=20

=20

Guys,=20

=20

I need about 300 get of extension cord. 16 AWG was fine at 100 ft. Can I =
string 3 of those together without a problem, or should I go up a size? =
Draw is 4 amps.

=20

Thanks,=20

=20

Scott

_______________________________________________
=20
Archive: http://www.team.net/pipermail/shop-talk
=20
http://autox.team.net/mailman/options/shop-talk/mayfield+shoptalk@sackhea=
ds.org
=20

=20

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</o:shapelayout></xml><![endif]--></head><body bgcolor=3Dwhite =
lang=3DEN-GB link=3Dblue vlink=3Dpurple><div class=3DWordSection1><p =
class=3DMsoNormal><span style=3D'mso-fareast-language:EN-US'>Comes back =
to =E2=80=98will it work=E2=80=99 which will depend on the device. In =
some places the utility companies are reducing line voltages to save =
energy =E2=80=93 and stuff still works.<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'mso-fareast-language:EN-US'>Only issue =
with the 40W dissipation would be if the cable was still coiled up =
=E2=80=93 then it would build up, melt the insulation and be a hazard. =
Over 300 feet the heat per foot would be negligible =E2=80=93 in fact =
more or less the same as it would be whatever the length of cable =
(actually a bit less, as the current is less due to the combined =
resistance).<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Neil<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><div><di=
v style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US>From:</span></b><span lang=3DEN-US> Shop-talk =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Jimmie =
Mayfield<br><b>Sent:</b> 31 October 2018 02:56<br><b>To:</b> =
[email-masked]<br><b>Subject:</b> Re: [Shop-talk] Extension =
cord length vs. wire gauge<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p>It comes down to voltage =
drop.&nbsp; You generally don't want voltage drop of more than around =
5%.<o:p></o:p></p><p><o:p>&nbsp;</o:p></p><p>At 4 amps, a 100ft 16ga =
cord is going to have a voltage drop of about 3.5V.&nbsp; This is =
okay.&nbsp; At 300ft, the voltage drop will be about 9.5V.&nbsp; That's =
unacceptable.&nbsp; Assuming your equipment still functions, your cord =
would be dissipating around 40W of heat due to internal =
resistance.<o:p></o:p></p><p>300ft of 14ga cord will have a drop of =
around 6V.&nbsp; That's marginal.<o:p></o:p></p><p>12ga cord will have a =
drop of about 3.75V.&nbsp; That's okay.<o:p></o:p></p><p>So go with 12ga =
cord. <o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>J<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>On 10/30/18 15:54, Scott Hall =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p =
class=3DMsoNormal>Guys, <o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal>I =
need about 300 get of extension cord. 16 AWG was fine at 100 ft. Can I =
string 3 of those together without a problem, or should I go up a size? =
Draw is 4 amps.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Thanks,&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Scott<o:p></o:p></p></div></div><p =
class=3DMsoNormal><br><br><o:p></o:p></p><pre>___________________________=
____________________<o:p></o:p></pre><pre><o:p>&nbsp;</o:p></pre><pre><a =
href=3D"mailto:[email-masked]">[email-masked]</a><o:p=
></o:p></pre><pre>Donate: <a =
href=3D"http://www.team.net/donate.html">http://www.team.net/donate.html<=
/a><o:p></o:p></pre><pre>Suggested annual donation=C2=A0 =
$12.96<o:p></o:p></pre><pre>Archive: <a =
href=3D"http://www.team.net/pipermail/shop-talk">http://www.team.net/pipe=
rmail/shop-talk</a><o:p></o:p></pre><pre><o:p>&nbsp;</o:p></pre><pre>Unsu=
bscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/shop-talk/mayfield+shoptalk=
@sackheads.org">http://autox.team.net/mailman/options/shop-talk/mayfield+=
[email-masked]</a><o:p></o:p></pre><pre><o:p>&nbsp;</o:p></pre></=
blockquote><p><o:p>&nbsp;</o:p></p></div></body></html>
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[email-masked]

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---

From: Jeff Scarbrough <[email-masked]>
Date: Wed, 31 Oct 2018 10:06:15 -0400

On Wed, Oct 31, 2018 at 7:49 AM Neil Sherry <[email-masked]> wrote:
>
> Only issue with the 40W dissipation would be if the cable was still coiled up – then it would build up, melt the insulation and be a hazard. Over 300 feet the heat per foot would be negligible

This ^^   40W over 300 feet is 0.13 W/ft.  Probably get hotter lying
in the sun.  But regardless, I always unroll my extension cords fully.

And in my youth, I burned up a rather large, expensive motor by trying
to start it with inadequate current.  It was obvious something was
wrong, but due to inexperience I was oblivious to obvious.

Jeff Scarbrough
Corrosion Acres, Ga.

[email-masked]

---

From: John Miller <[email-masked]>
Date: Wed, 31 Oct 2018 09:12:32 -0700

> It comes down to voltage drop.  You generally don't want voltage drop of 

I'm glad someone has the patience to be willing to unroll and reroll 
300ft of extension cord.

John.

[email-masked]

---

From: "Randall" <[email-masked]>
Date: Wed, 31 Oct 2018 11:04:47 -0700

> It's a power tool. Comparable to a chainsaw.

So, using 300ft of 16 AWG is going to limit to some extent how powerful your
tool is.  The question becomes: Are you willing to live with perhaps 20%
less power?

If you have the cord available, I'd give it a try.

-- Randall 
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild 

[email-masked]