On Saturday, September 8, 2018 at 7:37:12 PM UTC-5, Tom Biasi wrote:
> On 9/8/2018 6:19 PM, Andy wrote:
> > On Friday, September 7, 2018 at 2:21:38 PM UTC-5, Tom Biasi wrote:
> >> On 9/7/2018 1:13 PM, Andy wrote:
> >>> On Friday, September 7, 2018 at 9:15:11 AM UTC-5, jf...@my-deja.com wrote:
> >>>> On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
> >>>>> I looked at an ampacity table but it was confusing.
> >>>>>
> >>>>> Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
> >>>>>
> >>>>> Thanks,
> >>>>> Andy
> >>>>
> >>>> This is a false economy. You can get a 6 ft 16 gauge extension cord, rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit card. My opinion is that for this small amount of money, it is not worth risking your life by being a cheapskate.
> >>>
> >>> Not being a cheapskate. Just frugal.
> >>>
> >> Using 18 gauge wire on a circular saw is not recommended. It should be
> >> on a 15 amp circuit at least. That would mean 14 gauge wire if hard
> >> wired. If you are using an extension cord I would not go smaller than 16 ga.
> >
> > My microwave went out. I salvaged the cord. It was at least 14 gauge.
> >
> > Andy
> >
> Are you going to make an extension cord out of it?
Yes, I did.
Reply by default●September 9, 20182018-09-09
On Sun, 9 Sep 2018 10:36:49 -0000 (UTC), Chris <cbx@noreply.com>
wrote:
>On Thu, 06 Sep 2018 13:58:43 -0500, amdx wrote:
>
>> Adding all those together and using your 10 amp number,
>> 0.051 + 0.6385 + 0.25 = 0.9395 ohms, you're losing about 1v per amp.
>> I hope that gives you some insight.
>
>Just wondering if using too small a fuse can choke the current? Even
>though they're only an inch long?
>Say I am running my portable welder which draws 12A and is fitted with a
>13A fuse, via an extension lead which is fitted with only a 10A fuse,
>will the smaller fuse choke the current the welder is trying to draw?
>IIRC, the smaller fuse would probably not blow for many minutes, so one
>could be totally unaware that it's unable to supply enough current for
>the welder and giving rise to poor quality welds.
Fuses have relatively low resistance so if the amp and volt rating are
correct the small amount of resistance a fuse adds will be negligible.
A long wire run, with too small a gauge would probably have a greater
effect.
Reply by Chris●September 9, 20182018-09-09
On Thu, 06 Sep 2018 13:58:43 -0500, amdx wrote:
> Adding all those together and using your 10 amp number,
> 0.051 + 0.6385 + 0.25 = 0.9395 ohms, you're losing about 1v per amp.
> I hope that gives you some insight.
Just wondering if using too small a fuse can choke the current? Even
though they're only an inch long?
Say I am running my portable welder which draws 12A and is fitted with a
13A fuse, via an extension lead which is fitted with only a 10A fuse,
will the smaller fuse choke the current the welder is trying to draw?
IIRC, the smaller fuse would probably not blow for many minutes, so one
could be totally unaware that it's unable to supply enough current for
the welder and giving rise to poor quality welds.
Reply by Tom Biasi●September 8, 20182018-09-08
On 9/8/2018 6:19 PM, Andy wrote:
> On Friday, September 7, 2018 at 2:21:38 PM UTC-5, Tom Biasi wrote:
>> On 9/7/2018 1:13 PM, Andy wrote:
>>> On Friday, September 7, 2018 at 9:15:11 AM UTC-5, jf...@my-deja.com wrote:
>>>> On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
>>>>> I looked at an ampacity table but it was confusing.
>>>>>
>>>>> Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
>>>>>
>>>>> Thanks,
>>>>> Andy
>>>>
>>>> This is a false economy. You can get a 6 ft 16 gauge extension cord, rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit card. My opinion is that for this small amount of money, it is not worth risking your life by being a cheapskate.
>>>
>>> Not being a cheapskate. Just frugal.
>>>
>> Using 18 gauge wire on a circular saw is not recommended. It should be
>> on a 15 amp circuit at least. That would mean 14 gauge wire if hard
>> wired. If you are using an extension cord I would not go smaller than 16 ga.
>
> My microwave went out. I salvaged the cord. It was at least 14 gauge.
>
> Andy
>
Are you going to make an extension cord out of it?
Reply by Andy●September 8, 20182018-09-08
On Friday, September 7, 2018 at 2:21:38 PM UTC-5, Tom Biasi wrote:
> On 9/7/2018 1:13 PM, Andy wrote:
> > On Friday, September 7, 2018 at 9:15:11 AM UTC-5, jf...@my-deja.com wro=
te:
> >> On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
> >>> I looked at an ampacity table but it was confusing.
> >>>
> >>> Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circul=
ar saw)
> >>>
> >>> Thanks,
> >>> Andy
> >>
> >> This is a false economy. You can get a 6 ft 16 gauge extension cord, =
rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit=
card. My opinion is that for this small amount of money, it is not worth =
risking your life by being a cheapskate.
> >=20
> > Not being a cheapskate. Just frugal.
> >=20
> Using 18 gauge wire on a circular saw is not recommended. It should be=20
> on a 15 amp circuit at least. That would mean 14 gauge wire if hard=20
> wired. If you are using an extension cord I would not go smaller than 16 =
ga.
My microwave went out. I salvaged the cord. It was at least 14 gauge.
Andy
Reply by default●September 7, 20182018-09-07
On Fri, 7 Sep 2018 10:13:47 -0700 (PDT), Andy
<andrewkennedy775@gmail.com> wrote:
>On Friday, September 7, 2018 at 9:15:11 AM UTC-5, jf...@my-deja.com wrote:
>> On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
>> > I looked at an ampacity table but it was confusing.
>> >
>> > Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
>> >
>> > Thanks,
>> > Andy
>>
>> This is a false economy. You can get a 6 ft 16 gauge extension cord, rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit card. My opinion is that for this small amount of money, it is not worth risking your life by being a cheapskate.
>
>Not being a cheapskate. Just frugal.
Then it isn't a matter of design, but one of philosophy.
There is satisfaction in knowing you did the best job you could. The
way I use my woodworking tools, I don't skimp on how they are
maintained. I've built stacking wood cases for the hand operated
saws, sanders, grinders, etc.. A lot of effort up-front, but it is
nice to have the wrenches and change-out parts in one place with the
tool, and there's less chance of damage.
Reply by Tom Biasi●September 7, 20182018-09-07
On 9/7/2018 1:13 PM, Andy wrote:
> On Friday, September 7, 2018 at 9:15:11 AM UTC-5, jf...@my-deja.com wrote:
>> On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
>>> I looked at an ampacity table but it was confusing.
>>>
>>> Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
>>>
>>> Thanks,
>>> Andy
>>
>> This is a false economy. You can get a 6 ft 16 gauge extension cord, rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit card. My opinion is that for this small amount of money, it is not worth risking your life by being a cheapskate.
>
> Not being a cheapskate. Just frugal.
>
Using 18 gauge wire on a circular saw is not recommended. It should be
on a 15 amp circuit at least. That would mean 14 gauge wire if hard
wired. If you are using an extension cord I would not go smaller than 16 ga.
Reply by Andy●September 7, 20182018-09-07
On Friday, September 7, 2018 at 9:15:11 AM UTC-5, jf...@my-deja.com wrote:
> On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
> > I looked at an ampacity table but it was confusing.
> >
> > Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
> >
> > Thanks,
> > Andy
>
> This is a false economy. You can get a 6 ft 16 gauge extension cord, rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit card. My opinion is that for this small amount of money, it is not worth risking your life by being a cheapskate.
Not being a cheapskate. Just frugal.
Reply by jfen...@my-deja.com●September 7, 20182018-09-07
On Thursday, September 6, 2018 at 7:05:57 AM UTC-7, Andy wrote:
> I looked at an ampacity table but it was confusing.
>
> Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
>
> Thanks,
> Andy
This is a false economy. You can get a 6 ft 16 gauge extension cord, rated for 13A, from Lowe's for US$1.78 plus tax and interest on your credit card. My opinion is that for this small amount of money, it is not worth risking your life by being a cheapskate.
Reply by default●September 7, 20182018-09-07
On Thu, 6 Sep 2018 07:05:53 -0700 (PDT), Andy
<andrewkennedy775@gmail.com> wrote:
>I looked at an ampacity table but it was confusing.
>
>Would a 4 ft. length of 18 AWG wire be ok for a 10 amp load.? (Circular saw)
>
>Thanks,
> Andy
I wouldn't if I were doing it. But like a lot of things it all
depends on circumstances. (the context)
If you are regularly pulling 10 amps that wire will be getting warm.
Going to rip some longish wood, for instance? or jam/twist the blade?
It also depends on wire insulation and how resistant it is to melting
or cold flowing if it is pinched while warm.
Copper wire resistance goes up with heat too.
You can never be too safe, and it ain't a lot of money.... You will
probably get away with it, but is that a design goal?