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Corsa Sport » Message Board » General Chat » When working on your car

Poll: When working on your car
  I take - Negative off first followed by + Positive
  I take - Negative off only
  I take + positive off first followed by - Negative
  I take + Positive off only
  I dont Disconnect the Battery!


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Author When working on your car
16vKarlos
Member
Registered: 27th Oct 07
User status: Offline
29th May 11 at 10:31   View User's Profile U2U Member Reply With Quote
what is your method of disconnection of your battery?

this may not seem like an important question to the Mechanics around here, but im not a Mechanic and would like to know tha best option of Disconnection.

IIRC i have always taken the negative off first but also taken the positive off too..

is this bad?
Chris x
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Registered: 11th Sep 08
Location: Bexhill
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29th May 11 at 10:33   View User's Profile U2U Member Reply With Quote
Just take the earth off.
antnee
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Registered: 30th Dec 07
Location: Cov Drives: Clio 197
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29th May 11 at 10:45   View User's Profile U2U Member Reply With Quote
Usually just negative, if I need to take one off at all!
Mertin
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Registered: 12th Oct 05
Location: Scotland
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29th May 11 at 10:45   View User's Profile U2U Member Reply With Quote
Most work on a car doesnt really require the battery disconnected.
If I am doing it I remove positive first so the earth is still connected. When putting it back on I earth it first then put on positive

I hate working with electricity, I prefer to be able to know if somethings going to harm me such as something moving, e.g belts, shafts etc. Never know when theres some volts there

[Edited on 29-05-2011 by Mertin]
Bonney
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Registered: 14th Nov 04
Location: St Helens
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29th May 11 at 12:36   View User's Profile U2U Member Reply With Quote
Have never took a battery off unless i was replacing it.
AlunJ
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Registered: 3rd Apr 07
Location: Newport
User status: Offline
29th May 11 at 12:44   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Bonney
Have never took a battery off unless i was replacing it.

Same, my garage seen to rarely disconnect it either
Sam
Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
User status: Offline
29th May 11 at 12:45   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Chris x
Just take the earth off.
JaffaTB
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Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline
29th May 11 at 12:56   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Bonney
Have never took a battery off unless i was replacing it.
Mike
Organiser: North West and North Wales
Premium Member

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Registered: 20th May 06
Location: nr. Skipton, North Yorkshire
User status: Offline
29th May 11 at 13:04   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Mertin
Most work on a car doesnt really require the battery disconnected.
If I am doing it I remove positive first so the earth is still connected. When putting it back on I earth it first then put on positive

I hate working with electricity, I prefer to be able to know if somethings going to harm me such as something moving, e.g belts, shafts etc. Never know when theres some volts there

[Edited on 29-05-2011 by Mertin]


You should do it the other way around. With the earth still connected, all of the body is still earthed so there's a much greater chance of something arcing the battery positive to an earth whereas if the earth's disconnected first it cold only be arced out by something actually touching both battery terminals which is obviously a lot less likely.

If you're just disconnecting it to wire something in then it only needs the earth disconnecting. Iirc I don't think I even disconnected my battery when I wired the alarm in my old Corsa, probably should have done

[Edited on 29-05-2011 by Mike B]
adiohead
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Registered: 28th Sep 01
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29th May 11 at 14:04   View User's Profile U2U Member Reply With Quote
Negative
pow
Premium Member

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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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29th May 11 at 14:44   View Garage View User's Profile U2U Member Reply With Quote
I never unhook it lol!
LeeM
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Registered: 26th Sep 05
Location: Liverpool
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29th May 11 at 15:07   View User's Profile U2U Member Reply With Quote
negative if i have to
adiohead
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Registered: 28th Sep 01
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29th May 11 at 15:14   View User's Profile U2U Member Reply With Quote
I had to unhook mine the other day to reset my electric folding wing mirrors.
spikedjack
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Registered: 16th Oct 08
Location: wolverhampton/cannock
User status: Offline
29th May 11 at 17:25   View User's Profile U2U Member Reply With Quote
always N P P N removal then refitting
Matty W
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Registered: 31st Jan 11
Location: Ashton-in-Makerfield, Greater Manchester
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29th May 11 at 17:29   View User's Profile U2U Member Reply With Quote
if you want to disconect it, its always remove negetive first. if you touch any bodywork whilst disconecting the negetive it wont arc out and weld your tools together. once thats off it doesnt matter if you accidentaly earth out the positive because the circuit is broken
Dan
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Registered: 22nd Apr 02
Location: Gorleston on Sea, Norfolk
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29th May 11 at 17:29   View Garage View User's Profile U2U Member Reply With Quote
It really doesnt matter so long as your being careful. Not to touch anything metal with the positive while the earth is still connected. But the proper way is NP then PN as above.




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ed
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Registered: 10th Sep 03
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29th May 11 at 17:39   View User's Profile U2U Member Reply With Quote
My negative is on a quick release so I take that one off

 
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