T-Pain Is On A Boat: Re: [Electric Boats] Re: Batteries wired in series

When you are using a multi-meter to check battery voltage, be careful also.
If you happen to be chasing a posible voltage drain on your system and plug your leads into the 10A current connections.
Go for dinner and come back and grab the multimeter and change it to check voltage, but leave it connected to the 10A connection. On a 72 volt fully charged system, the multimeter lead will vapourize in less than a second.
Also always use eye protection just incase.
Maybe not all meters do this but mine did, suspect it is because there is a shunt internally on this setting.

Mark

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On Thu, 4/28/16, 'Jason (Electric Boats) Taylor' jt.yahoo@jtaylor.ca [electricboats] <electricboats@yahoogroups.com> wrote:

Subject: Re: [Electric Boats] Re: Batteries wired in series
To: electricboats@yahoogroups.com
Received: Thursday, April 28, 2016, 4:35 AM

The main precautions to take are to make
sure you don't simultaneously contact more than one
exposed terminal on your batteries. I modified a ratchet
driver and dedicated it to the engine room. I simply sleeved
the metal handle with heat shrink tube, and this is the ONLY
tool I use when the battery cover is off. I have had a
tool-drop short circuit before. I don't want one
again.
--Jason
Taylorv:514-815-8204e:j@jtaylor.ca
On Apr 28,
2016, at 3:26 AM, Hannu Venermo gcode.fi@gmail.com
[electricboats] <electricboats@yahoogroups.com>
wrote:

Its DC.
A shock involves touching two wires, the + and the
-.
Grounding is not involved (or present).

All dc wires are connected point to point.
DC is considered "safe" at 48V DC, upto
approx 80V.
Low voltage does not want to go through humans. We
have high
10Mohm resistance, more or less, and poor
conductivity.

On 28/04/2016
04:22, king_of_neworleans
wrote:

As
long as you are not grounded you can touch any
connection in the
system and not get a shock. But better to simply not
touch any
bare conductor in the first place.

--
-hanermo (cnc designs)

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