[AT] [OT] Has anyone seen one of these??

[Brice Adams]

I had a Kohler DC light plant on a cart that ran all my hand tools with
universal motors.
You can identify a universal motor, it will have brushes.
Brice

On Sat, Dec 21, 2019 at 9:16 AM Doug Tallman <dtallman at accnorwalk.com>
wrote:

> I have a Kohler 110 DC generating plant. I think it's 1500W. Always
> wondered what I could run with it besides light bulbs.  Doug T
> On 12/21/2019 8:10 AM, Stephen Offiler wrote:
>
> I'll admit I had no idea there was ever much of a DC grid, beyond the
> earliest of early days when Edison supported DC and Tesla supported AC and
> electric power was an untamed frontier.
>
> Carl's comment about working with AC vs DC might refer to the workings of
> the appliance.  Agreed, generally, volts times amps equals watts and it
> doesn't matter AC vs DC.  That is 100% true for resistive loads like
> lightbulbs.  It is not quite true for inductive loads like motors, but OK
> as a first-pass approximation.
>
> The major difference with having DC around is safety.  If you get zapped
> by 120VAC, the reversing polarity means crossing thru 0 volts 120 times per
> second, which tends to kick you away.  DC does not reverse, and the steady
> voltage tends to lock up your nervous system and kill you.  Back in the
> early days, conductor insulation was not exactly up to modern standards,
> nor was there much in the way of safety watchdogs like Underwriter's Labs
> etc., so electric shock was more of a threat.
>
> Steve O.
>
>
> On Fri, Dec 20, 2019 at 4:37 PM <szabelski at wildblue.net> wrote:
>
>> Working with a 115VDC system would be no different than working with a
>> 120VAC system. You house has a 100A or 200A  service, that doesn’t mean you
>> can draw that current at every wall plug. Your breakers would limit the
>> current and trip if you try to pull more than rated.
>>
>> I would guess that a house back in the day of 115VDC had a standard
>> series of four cell fuse blocks with 2, 3, 5, 10, and maybe a couple of 15A
>> fuses. When I was a kid in Detroit, our house had such a set up for our old
>> 80A 120VAC house service (it was mounted on the back porch, outside, but
>> sheltered from the weather.). Fuses were still in use up to the 40’s - 50’s.
>>
>> Carl
>> ----- Original Message -----
>> From: szabelski at wildblue.net
>> To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
>> Sent: Fri, 20 Dec 2019 16:05:51 -0500 (EST)
>> Subject: Re: [AT] [OT] Has anyone seen one of these??
>>
>> Cecil, this would only be about 5 to 6 amps at 115VDC. If you want it to
>> run, you’ll have to put 10 car batteries in series to get it to do so.
>>
>> Putting 10 car batteries in series could give you a potential DC current
>> equal to about the current from the weakest battery.
>>
>> Batteries add voltage when in series, and maintain the current rating of
>> one individual battery. Batteries in parallel maintain the voltage level of
>> one individual battery, and the current add together.
>>
>> On the Abrams we used a series-parallel combination of six 12V, 100 AH,
>> batteries to get a battery system rated at 24 VDC and 300 AH. Three sets of
>> 2 batteries in series, connected in parallel.
>>
>>
>>     Carl
>>
>>
>> ----- Original Message -----
>> From: Cecil Bearden <crbearden at copper.net>
>> To: at at lists.antique-tractor.com
>> Sent: Fri, 20 Dec 2019 09:42:32 -0500 (EST)
>> Subject: Re: [AT] [OT] Has anyone seen one of these??
>>
>> OK, this is old, I have found ads dating back to 1912 showing this.  It
>> is an old shop vacuum.  When it was mounted on casters it was used in
>> the home.  US radiator corp owned the invincible vacuum mfg co.  I don't
>> know if I can use it for cleaning out the tractor cab, the motor states
>> 3/4 hp on the nameplate.  It also mentions DC, so I have to inspect when
>> I get it this afternoon. 115 V on D.C would knock you into the next
>> room....   My wife wants to turn it into a table lamp....    I am more
>> of a purist, I want to see it work....
>>
>> Cecil
>>
>>
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