Re: [EVDL] fusewires for 18650 cells

2019-01-02 Thread Lee Hart via EV

ken via EV wrote:

  Thou my cells are rather close in capity, I'm still thinkng of using fuse
wire as in the telsa pack .  If i used the phone cable 2 pair cable that
runs around houses and used 3/4 inch form cell to bus bar  would my 10
amp cells be protected ?


As mentioned, phone wire is not of consistent size or quality. As a 
result, its performace as a "fuse" is likely to be inconsistent. Maybe 
that's good enough; maybe not. You'll have to test it carefully to be sure.


A few background details on fuses might help. A fuse "blows" when the 
metal reaches its melting temperature. That is a function of current, 
time, and ambient temperature.


Onderdonk's equation provides a ROUGH approximation of the fusing 
current of a round uninsulated wire in still air. For copper, it is I = 
0.148 A/T^0.5, where I = current in amps, A = cross sectional area in 
mils, and T = seconds.


Any insulation on the wire drastically lowers the fusing current.

Any airflow around the wire drastically increases the fusing current.

Most metals have a high enough melting point that they can set fire to 
surronding materials. When the fuse opens, there may also be an arc. 
This is especially dangerous on high voltage DC, because the arc will 
not self-extinguish until it is very long! That's why commercial fuses 
are always in some fireproof package.


Whatever you do, test, Test, TEST!
--
The belief that there is only one truth, and that oneself is in
possession of it, is the root of all evil in the world. (Max Born)
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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[EVDL] EVSE frustrated Tesla.nl along craggy Arctic coastal border.ru

2019-01-02 Thread brucedp5 via EV


http://bellona.org/news/transport/electric-vehicles/2018-12-rapid-electric-car-charger-opens-on-norwegian-russian-border
Rapid electric car charger opens on Norwegian Russian border
December 29, 2018  Anna Kireeva, Charles Digges

[images  
http://network.bellona.org/content/uploads/sites/3/2018/12/electric-car-charger-kirkenes.jpg
electric car charger kirkenes  The new electric car charging station in
Kirkenes, Norway

http://network.bellona.org/content/uploads/sites/3/2018/12/rune-rafaelson-electric-car.jpg
rune rafaelson electric car  Kirkenes Mayor Rune Rafaelson, second from
left, and representatives of Varanger Kraft. Credit: Anna Kireeva/Bellona

http://network.bellona.org/content/uploads/sites/3/2018/12/electric-car-kirkenes.jpg
electric car kirkenes  A car charging at the new electric car charge station
in Kirkenes, Norway. Credit: Anna Kireeva/Bellona
]

Despite Norway’s hungry consumption of electric cars, the infrastructure to
charge them has been sluggish to appear in the country’s northernmost
regions, especially Finnmark County along the craggy Arctic coast.

Despite Norway’s hungry consumption of electric cars, the infrastructure to
charge them has been sluggish to appear in the country’s northernmost
regions, especially Finnmark County along the craggy Arctic coast.

Things had gotten so bad for electric car owners that last March, Finn Helge
Lund, a frustrated Tesla-driving resident of Kirkenes – the tiny town on the
country’s border with Russia ­– shelled out nearly $3000 of his own money to
install a public charging station himself.

The move was meant to troll Varanger Kraft, the Finnmark-based municipal
power company, and force it into taking up the e-car charging slack. The
local mayor, Rune Rafaelsen – himself in the market for an electric car if
only there was somewhere to charge it ­– had grown frustrated with the lack
of options.

Bellona, meanwhile, had launched its Arctic Electric Road project,
spearheading an initiative with officials in Murmansk to beef up the
charging infrastructure along highways leading into Russia out of Northern
Scandinavia. But improved charging opportunities on the Russian side won’t
do much good if e-car drivers in Norway have to push their cars across the
border.

Indeed, in a country where electric and hybrid car sales account for more
than half of all vehicles sold – and where public policy makes the
preference for emissions-free automobiles nearly a matter of law – the
situation for Finnmark was getting a little awkward.

But now things are finally starting to change. This week, on Christmas Eve,
a charging station that can rapidly recharge two electric cars at a time was
opened in Kirkenes.

“The appearance of a high-speed charging station in our city is a real
Christmas present,” Lund told Bellona this week – a gift that he and the
other 25 electric car drivers in town can share.

The 50-kilowatt charger, powered by the local hydroelectric plant and fitted
with solar panels for the summer’s endless sun, can charge a car in 45
minutes – lopping hours off the charge times Lund and other local e-car
drivers had grudgingly grown used to. The new charger sports three types of
connections suitable for different kinds of electric cars.

According Mayor Rafaelsen, the new station tops off three years of
negotiations with Varanger Kraft, which had promised to open the new
chargers as a pilot project before the New Year. Now, with the charger
installed in a centrally located parking lot, the company has made good on
its word.

“I am very proud that we managed to realize this,” Rafaelson said during the
unveiling of the station this week. “We are very pleased to give tourists
coming to Kirkenes the opportunity to charge their own cars with local
energy.”

In Rafaelson’s accounting, the exploding popularity of electric cars in
Norway took authorities in the country’s north by surprise. By the end of
2017, 54 percent of all cars sold in Norway were either electric or hybrid,
marking the first time in any major driving economy that environmentally
friendly auto sales outpaced the their gas and diesel driven counterparts.

That’s put pressure on Finnmark County to catch up. More pressure came from
across the border, in Murmansk, where a charger installed by Bellona at the
city’s Park Inn hotel has started to draw a small flow of motorists passing
through in electric cars. Russia’s northern capital even hosted an electric
car rally last summer, drawing e-car drivers from Russia and Norway alike,
each of whom drove more than 1,000 kilometers a piece to highlight the need
for an Arctic e-car charging infrastructure.

No wonder Finnmark was feeling a little left behind. But as Rafaelson tells
it, the times have changed.

“This is the beginning of a new era in Kirkenes,” he said. “Now we can offer
electric vehicle charging services for all want it – and of those there will
be more and more.”

For a time, drivers can even charge up for free. According to Arnfinn

[EVDL] Tesla-X Tows-Away Silverado-ice> De-ICE'ing Supercharger (v)

2019-01-02 Thread brucedp5 via EV

[ref  (rush's post)
https://www.mail-archive.com/ev@lists.evdl.org/msg25020.html
Tesla tows Pickup truck
]

http://www.thedrive.com/news/25746/tesla-model-x-owner-de-ices-supercharger-by-towing-away-parked-chevrolet-silverado
Tesla Model X Owner 'De-ICEs' Supercharger by Towing Away Parked Chevrolet
Silverado
January 2, 2019  Brian Evans

[image  
http://imagesvc.timeincapp.com/v3/foundry/image/?q=70=1440=https%3A%2F%2Ftimedotcom.files.wordpress.com%2F2019%2F01%2FScreen-Shot-2019-01-02-at-10.png

http://imagesvc.timeincapp.com/v3/foundry/image/?q=60=https%3A%2F%2Fs3.amazonaws.com%2Fthe-drive-staging%2Fmessage-editor%252F1546444139720-icedtrucks.jpg
Reddit User Barcode Official


video
https://youtu.be/ClDpGqj3PGA
Model X Towing a Chevy Silverado Truck out of a Supercharger Station  Tesla
Trips via YouTube
]

Truck owners beware—the Model X can really tow.

A recent trend has popped up across the nation, called "ICEing" by some,
where pickup owners park their vehicles across a line of Tesla
Superchargers. This practice can strand Tesla owners who might be depending
on the Supercharging station to top off their batteries to complete their
journey. In a video posted by the YouTube channel Tesla Trip, they test if a
Model X can tow a Chevy Silverado out of a Supercharger station and, handily
for EV fanatics, the results are positive. 

In case you missed it, the Silverado is owned by a family member so no one's
personal property was tampered with unknowingly. The Drive does not endorse
towing or tampering with other's property. 

The Model X seems to tow the Silverado out of the way fairly effortlessly
which should be no surprise to Tesla fans as the Model X has proved it's
towing chops many times over. The Boring Company used a Model X to tow a
claimed 250,000 pounds worth of rail cars full of muck out of one of its
tunnels, and the electric SUV has also been used to help tow a stuck semi
truck up a hill in snowy conditions.

The "ICEing" of Superchargers [
http://www.thedrive.com/sheetmetal/17222/gentle-reminder-stop-parking-your-cars-in-electric-charging-stalls
], as Tesla owners call it, is not a new phenomenon but up until now it
usually was only a car or two blocking the stalls. In the past few months,
Tesla owners have reported packs of pickup trucks blocking charging stalls
and even going as far to harass the EV drivers. In a recent post to the
Tesla Motors subreddit, one user claims several truck owners took up a slew
of stalls at a Supercharger and were shouting profanities at the Tesla
owners attempting to charge their vehicles. 

These situations can be frustrating for Tesla owners who often have no clear
solution or steps to have the trucks removed. Several states have enacted
legislation which makes it illegal for conventional gas-powered vehicles to
park in spots designated for EV charging but that doesn't always include a
clause for having the vehicle towed. It's also difficult to discern who owns
the Supercharger in certain cases but the property owners ultimately have
the ability to work with towing companies to have the offending vehicles
removed.
[© thedrive.com]




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{brucedp.neocities.org}

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[EVDL] Tesla tows Pickup truck

2019-01-02 Thread Rush Dougherty via EV
http://www.thedrive.com/news/25746/tesla-model-x-owner-de-ices-supercharger-by-t
owing-away-parked-chevrolet-silverado

Hook'em up!

Rush Dougherty
Tucson AZ 85719




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Re: [EVDL] fusewires for 18650 cells

2019-01-02 Thread Robert Bruninga via EV
Best thing would be to just test them and be sure.
But don't test with a 3" piece of the wire from end of battery to the
other end, because that is not the same as testing a 3/4" piece.  You will
need a 3" piece of heavy wire and then just the 3/4" of the "fuse" wire to
get a valid test.

But trivial to do the test.


Bob

-Original Message-
From: EV  On Behalf Of ken via EV
Sent: Wednesday, January 2, 2019 4:26 PM
To: Electric Vehicle Discussion List 
Cc: ken 
Subject: [EVDL] fusewires for 18650 cells

 Thou my cells are rather close in capity, I'm still thinkng of using fuse
wire as in the telsa pack .  If i used the phone cable 2 pair cable that
runs around houses and used 3/4 inch form cell to bus bar  would my 10 amp
cells be protected ?

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[EVDL] fusewires for 18650 cells

2019-01-02 Thread ken via EV
 Thou my cells are rather close in capity, I'm still thinkng of using fuse
wire as in the telsa pack .  If i used the phone cable 2 pair cable that
runs around houses and used 3/4 inch form cell to bus bar  would my 10
amp cells be protected ?

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Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)