Prev: weirdest Avalon of the week
Next: mitsubishi quality higher than toyota
From: who where on 6 Jul 2010 22:29
On Wed, 07 Jul 2010 08:59:17 +1000, Neil Fisher
<neil(a)magnecor.com.au.invalid> wrote:

>On Tue, 6 Jul 2010 05:44:49 -0700 (PDT), Diesel Damo
><Diesel_4WD(a)yahoo.com.au>, after considering some belly-button fluf,
>wrote:
>>Boyfriend was telling them
>>not to start either car and also said not to connect the negative
>>cable to the negative terminal - it should go to earth.
>>
>
>Connecting the negative side to chassis rather than battery post is so
>that there is a reduced risk of igniting any hydrogen the battery may
>be pumping out in a high charge/discharge state - a reasonable
>precaution, providing you connect and disconnect the negative side
>last, of course.


Connecting the negative lead to the chassis or the recipient avoids
issues with faulty battery earth lead/connection and improves the
cranking capability anyway.

Should always connect neg last and remove first as a safety measure.
From: Milton on 7 Jul 2010 01:29

"Diesel Damo" <Diesel_4WD(a)yahoo.com.au> wrote in message
news:bc95f6a7-9883-411a-a8fa-1aece85284e4(a)i16g2000prn.googlegroups.com...
On Jul 7, 8:59 am, Neil Fisher <n...(a)magnecor.com.au.invalid> wrote:

> Connecting the negative side to chassis rather than battery post is so
> that there is a reduced risk of igniting any hydrogen the battery may
> be pumping out in a high charge/discharge state - a reasonable
> precaution, providing you connect and disconnect the negative side
> last, of course.

Okay so that's you and John both saying neg should be removed last,
but Kev and Trev say it should be removed first. AFAIK you all have a
history of generally knowing what you're talking about, so um...

Correct, I'm just itchin' for Nods to weigh in, but my money would be he'd
agree with anything John says. :)

Regards

Milton

From: Milton on 7 Jul 2010 01:32

"who where" <noone(a)home.net> wrote in message
news:1gp7369ogq6momdbd7v1t57rjrmtcg39rc(a)4ax.com...
> On Wed, 07 Jul 2010 08:59:17 +1000, Neil Fisher
> <neil(a)magnecor.com.au.invalid> wrote:
>
>>On Tue, 6 Jul 2010 05:44:49 -0700 (PDT), Diesel Damo
>><Diesel_4WD(a)yahoo.com.au>, after considering some belly-button fluf,
>>wrote:
>>>Boyfriend was telling them
>>>not to start either car and also said not to connect the negative
>>>cable to the negative terminal - it should go to earth.
>>>
>>
>>Connecting the negative side to chassis rather than battery post is so
>>that there is a reduced risk of igniting any hydrogen the battery may
>>be pumping out in a high charge/discharge state - a reasonable
>>precaution, providing you connect and disconnect the negative side
>>last, of course.
>
>
> Connecting the negative lead to the chassis or the recipient avoids
> issues with faulty battery earth lead/connection and improves the
> cranking capability anyway.
>
> Should always connect neg last and remove first as a safety measure.

FWIW, some common sense at last and explained correctly as well.

Regards

Milton

From: OzOne on 7 Jul 2010 01:37
On Wed, 7 Jul 2010 15:29:40 +1000, "Milton" <millame23(a)yahoo.com>
wrote:

>
>"Diesel Damo" <Diesel_4WD(a)yahoo.com.au> wrote in message
>news:bc95f6a7-9883-411a-a8fa-1aece85284e4(a)i16g2000prn.googlegroups.com...
>On Jul 7, 8:59 am, Neil Fisher <n...(a)magnecor.com.au.invalid> wrote:
>
>> Connecting the negative side to chassis rather than battery post is so
>> that there is a reduced risk of igniting any hydrogen the battery may
>> be pumping out in a high charge/discharge state - a reasonable
>> precaution, providing you connect and disconnect the negative side
>> last, of course.
>
>Okay so that's you and John both saying neg should be removed last,
>but Kev and Trev say it should be removed first. AFAIK you all have a
>history of generally knowing what you're talking about, so um...
>
>Correct, I'm just itchin' for Nods to weigh in, but my money would be he'd
>agree with anything John says. :)
>
>Regards
>
>Milton

It really doesn't matter if the battery is a sealed type.
If not, and the neg is connected remote from the battery then disco
the neg first to eliminate the extremely rare chance of exploding
gases.
If the jump is connected to the battery then again it really is of no
consequence.

Now that should get you an answer from Nod exactly the opposite..;)




OzOne of the three twins

I welcome you to Crackerbox Palace.
From: John_H on 7 Jul 2010 02:39
Diesel Damo wrote:
>On Jul 7, 8:59�am, Neil Fisher <n...(a)magnecor.com.au.invalid> wrote:
>
>> Connecting the negative side to chassis rather than battery post is so
>> that there is a reduced risk of igniting any hydrogen the battery may
>> be pumping out in a high charge/discharge state - a reasonable
>> precaution, providing you connect and disconnect the negative side
>> last, of course.
>
>Okay so that's you and John both saying neg should be removed last,
>but Kev and Trev say it should be removed first. AFAIK you all have a
>history of generally knowing what you're talking about, so um...

If you're disconnecting the battery in the car it's negative first and
reconnect it last. Do it the other way around and you risk shorting
out the battery with the spanner when you loosen (or retighten) the
positive terminal clamp bolt with the ground side connected.

With jumper leads I always disconnect the positive first and fasten
the positive clamp back along the cable so there's no risk of shorting
the jumper terminals before you disconnect the donor battery. If you
do it the other way (negative first) and there's a common earth
between vehicles (ie if they're touching one another) you'll short
both batteries if you happen to contact metal with the negative jumper
clamp while the positives are still connected.

You still need to be careful whichever way you choose to do it, but by
my reckoning you eliminate at least one possibility for disaster by
disconnecting the positive on the recipient vehicle first. :)

--
John H
First  |  Prev  |  Next  |  Last
Pages: 1 2 3 4 5
Prev: weirdest Avalon of the week
Next: mitsubishi quality higher than toyota