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Posted by jeff on June 17, 2008, 8:22 pm
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Talking to a welder friend of mine today and he mentioned that he
was thinking of getting a generator to power up his grinders, mag
drill and other ac tools because the SA 200 only puts out dc volts and
is tough on some ac tools.
I suggested possibly setting up an invertor to run of the welders
12 volt charging system. It looks like most his stuff is in the
15-20 anp range from what I could see around his shop, so an invertor
may work but i'm not sure if the charging system could handle it.
What do you guys do out in the field away from ac?
Thanks for looking
Jeff
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Posted by SteveB on June 18, 2008, 2:24 am
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> Talking to a welder friend of mine today and he mentioned that he
> was thinking of getting a generator to power up his grinders, mag
> drill and other ac tools because the SA 200 only puts out dc volts and
> is tough on some ac tools.
> I suggested possibly setting up an invertor to run of the welders
> 12 volt charging system. It looks like most his stuff is in the
> 15-20 anp range from what I could see around his shop, so an invertor
> may work but i'm not sure if the charging system could handle it.
> What do you guys do out in the field away from ac?
>
> Thanks for looking
>
> Jeff
I have a SA 200, and it seems to work AC power tools fine. I am not a whiz
at electricity, other than to tell you if it's off or on, but I'm sure
someone here will explain it in detail. When I got my SA 200 running, I
asked this same question, and was assured it was okay to run the power
tools.
Steve
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Posted by RoyJ on June 18, 2008, 9:24 am
Please log in for more thread options The DC output from the the SA 200 runs any 120 volt power tools with
universal motors (those with brushes) just fine. That means drills,
grinders, Skillsaws, and most hand held tools are good to go. This
covers almost all the cleanup and fabrication tools used by welders.
You CANNOT run any machinery with split phase or cap start motors. This
includes most larger compressors and table saws. Some of the smaller
el-cheapo oil less compressors and smaller contractor style table saws
use the brushed motors, they will run ok.
The only item that really gets to be a pain is compressed air: if you
need air in the field, you are pretty much forced to get a gas engine
driven compressor.
As for using an inverter: Running 12 volts in and 120 volts out means
that the input current must be 10x greater than the output current
(actually, more like 12X due to inefficiencies) So a 13 amp skill saw
will draw 130 amps input, WAY more than the 12 volt output from the SA 200.
The inverters work ok for small loads like a small TV, computer, small
1/4" drill and similar.
jeff wrote:
> Talking to a welder friend of mine today and he mentioned that he
> was thinking of getting a generator to power up his grinders, mag
> drill and other ac tools because the SA 200 only puts out dc volts and
> is tough on some ac tools.
> I suggested possibly setting up an invertor to run of the welders
> 12 volt charging system. It looks like most his stuff is in the
> 15-20 anp range from what I could see around his shop, so an invertor
> may work but i'm not sure if the charging system could handle it.
> What do you guys do out in the field away from ac?
>
> Thanks for looking
>
> Jeff
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Posted by Jim Wilkins on June 18, 2008, 10:00 am
Please log in for more thread options > The DC output from the the SA 200 runs any 120 volt power tools with
> universal motors (those with brushes) just fine. That means drills,
> grinders, Skillsaws, and most hand held tools are good to go. This
> covers almost all the cleanup and fabrication tools used by welders.
> ...
True, but the brush holder screws may not be obvious. The ones on my
DeWalt look a lot like the other case screws.
The power rating is on the label. My angle grinders are clearly
labeled for 120V DC or AC at 50/60Hz. Surprisingly the Dremel is
labeled simply 120V AC, no mention of DC.
Jim Wilkins
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Posted by Robert Swinney on June 18, 2008, 11:50 am
Please log in for more thread options Jim sez,
"Surprisingly the Dremel is
labeled simply 120V AC, no mention of DC."
That is probably because the manufacturer (Dremel) assumes users of their tools
will not have 110VDC
supplies which will mate with their power cords. Universal motors (Dremels) are
rated in RMS terms.
Hook a Dremel up to 110VDC and it should run even better than on AC. All thing
considered, Dremel
brushes should last a little longer on DC.
Bob Swinney
> The DC output from the the SA 200 runs any 120 volt power tools with
> universal motors (those with brushes) just fine. That means drills,
> grinders, Skillsaws, and most hand held tools are good to go. This
> covers almost all the cleanup and fabrication tools used by welders.
> ...
True, but the brush holder screws may not be obvious. The ones on my
DeWalt look a lot like the other case screws.
The power rating is on the label. My angle grinders are clearly
labeled for 120V DC or AC at 50/60Hz.
Jim Wilkins
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> was thinking of getting a generator to power up his grinders, mag
> drill and other ac tools because the SA 200 only puts out dc volts and
> is tough on some ac tools.
> I suggested possibly setting up an invertor to run of the welders
> 12 volt charging system. It looks like most his stuff is in the
> 15-20 anp range from what I could see around his shop, so an invertor
> may work but i'm not sure if the charging system could handle it.
> What do you guys do out in the field away from ac?
>
> Thanks for looking
>
> Jeff