Re: (ET) Tool receptacle

["Christopher Zach" <czach computer org>]

Perhaps, however I have pulled some serious arcs just by shorting out my
solar panel to test the amp ratings at short (yes you can do this without
damaging a panel in any way). Even at 6-10 amps, I can draw a good arc of
fire (and demolish test leads).

I'd hate to try this with the 600 to 1,00amps a string of T105's can 
produce
at short.

Maybe the ET people were thinking "well, we are using small wire, it will
heat up and limit the current". My problem is I would want to go for max
efficiency, so the wires from my ET to the charger are ten gauge, and will
be six gauge once I get the new shed built and the pernament conduit in.

And the wire I would run to the inverter plug would be at least four gauge
to minimize voltage loss. That would cause a problem with the ET.

Hm. Any idea what the max reasonable amperage an E20 is expected to draw
(going up a hill, etc). Maybe I should put a 200-300amp series fuse in line
with the batteries.

Chris



----- Original Message -----
From: "Elie, Larry (L.D.)" <lelie ford com>
To: "'Christopher Zach'" <czach computer org>; "RJ Kanary"
<rjkanary nauticom net>; "Elec-trak" <elec-trak cosmos phy tufts edu>
Sent: Monday, March 11, 2002 9:30 AM
Subject: RE: (ET) Tool receptacle


> Yes, the rating is low.  No, it isn't fused.  My guess is; they tested 
> the
failure mode, and the connector fails OPEN.  That means the connector IS 
the
fuse.  That also explains why they used a little 20A connector.  Ratings 
are
interesting; as I recall, the rating is 150% for 1.5 hours, 200% for
minutes, and 120% for many hours at room temperature.  Had they chosen a
bigger connector, they would have required a fuse.  BTW, all the 
accessories
I have seen for the connector use 16 Ga wire.  20 A would be pretty warm...
>
> On the Tripp-Lites; I contacted the vendor over a year ago.  I was really
interested in the combined fast-charger/inverted.  I no longer need this
sort of sophistication (got some 36V accessories, and improved the 
charger),
but a better charger is just as important as a big inverter.
>
> Larry Elie
>
>
> -----Original Message-----
> From: Christopher Zach [mailto:czach computer org]
> Sent: Friday, March 08, 2002 9:36 PM
> To: RJ Kanary; Elec-trak
> Subject: Re: (ET) Tool receptacle
>
>
> Yep, I have the homeowner's manual; I just didn't see a fuse and it blows
my
> mind (that's a good pun :-) that they didn't fuse an outboard outlet. 
> What
> happens if the chainsaw shorts? Melts in your hand?
>
> That's technically a problem for me since the Elec-Trak's 20amp outlet
plugs
> directly into the outboard side of the Solarex charger. Thus if the
charger
> were to ever short, the full force of the tractor's battery pile would
> incinerate the controller and cable. My panels and the rest of the shed's
> power infrastructure are safe because they are behind a 20amp 10k AIR DC
> rated fused disconnect.
>
> I guess I'll just have to put in a second RK5 30amp disconnect box at the
> plug end for the tractor, since it's technically an unfused power source.
> And maybe a little sanity fuse in the tractor itself. This will make four
> disconnect boxes on a simple shed.
>
> Drat.
>
> Chris
>
> ----- Original Message -----
> From: "RJ Kanary" <rjkanary nauticom net>
> To: "Christopher Zach" <czach computer org>; "David Roden (Akron OH USA)"
> <roden ald net>; "Elec-trak" <elec-trak cosmos phy tufts edu>
> Sent: Friday, March 08, 2002 9:15 PM
> Subject: Re: (ET) Tool receptacle
>
>
> > Christopher, SO-2 can be interrupted by CB-2, the one primarily 
> > intended
> for
> > protection in event of a diode shorting on the charger,[on the negative
> > side], or CB-1, that husky, 100 to 125 Amp      Klixon® beast, that
lives
> on
> > the traction motor,[positive side].
> >        Neither can be expected to provide over current protection to
that
> > outlet. It is, for all intents and purposes, unfused.
> >       If you have not already done so, order the Homeowner's Service
> Manual
> > from Tech Parts. The schematics are large enough, and clear enough, to
> make
> > puzzling out what goes where and why pretty straight forward.
> >
> >
> > RJ Kanary
> > Member TRNi  Since 1998
> > ASE® Certified Master Auto Technician
> >
> > rjkanary nauticom net
> >
> > ----- Original Message -----
> > From: "Christopher Zach" <czach computer org>
> > To: "David Roden (Akron OH USA)" <roden ald net>; "Elec-trak"
> > <elec-trak cosmos phy tufts edu>
> > Sent: Friday, March 08, 2002 8:01 PM
> > Subject: Re: (ET) Tool receptacle
> >
> >
> > > Actually there might be a solution (there's always a solution :-)
> > >
> > > Way back in my pile of junk is an old DEC TC01 DecTape unit from the
> > 1960's.
> > > This unit used the same twist-lock plug; however it had a third round
> pin
> > in
> > > the center.
> > >
> > > That was the ground. My guess is Hubbel built an ungrounded version
(the
> > one
> > > on the ET) and one that had a hole in the center for plugs with three
> > > prongs. As per NEC codes, one could plug an ungrounded device into a
> > > grounded receptacle, but one could not plug a grounded device into an
> > > ungrounded receptacle (think normal 2 and three prong outlets)
> > >
> > > Thus if I can find one of these, I could retrofit the tractor, have 
> > > my
> > > ground (which would be nice, because someday this system will charge
off
> > > 20amps of solar) and plug in ET devices when needed.
> > >
> > > Anyone know if that outlet is fused with a 20-30 amp fuse?
> > >
> > > Chris
> > >
> > > ----- Original Message -----
> > > From: "David Roden (Akron OH USA)" <roden ald net>
> > > To: "Christopher Zach" <czach computer org>
> > > Sent: Friday, March 08, 2002 11:25 AM
> > > Subject: Re: (ET) Tool receptacle
> > >
> > >
> > > > On 7 Mar 2002 at 19:18, Christopher Zach wrote:
> > > >
> > > > > Kind of how you will not find two prong electrical outlets
anymore;
> > > > > installing one is pretty much a violation of current NEC codes.
> > > >
> > > > This is generally correct.  Note though that in an older home with
> > > > ungrounded wiring, NEC prohibits installation of a 3-pin outlet as 
> > > > a
> > > > replacement for a defective 2-pin, unless a ground is run to the
box.
> > > There
> > > > is some question in my mind about whether installing a 2-pin outlet
is
> > > > permitted or not -- this is unclear to me.  However, in such cases
the
> > > code
> > > > explicitly permits the installation of a GFI ~without~ ground (yes
> they
> > do
> > > > still function that way), provided that the outlet is labeled "no
> > > equipment
> > > > ground."  This is what I do when replacing the outlets in my 
> > > > current
> > home
> > > > (circa 1920).
> > > >
> > > >
> > > > David Roden - Akron, Ohio, USA
> > > > 1991 Solectria Force 144vac
> > > > 1991 Ford Escort Green/EV 128vdc
> > > > 1970 GE Elec-trak E15 36vdc
> > > > 1974 Avco New Idea 36vdc
> > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
=
> > > > Thou shalt not send me any thing which says unto thee, "send this 
> > > > to
> all
> > > > thou knowest."  Neither shalt thou send me any spam, lest I smite
> thee.
> > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
=
> > > >
> > > >
> > > >
> > >
> > >
> >
> >
> >
>
>