16vKarlos
Member
Registered: 27th Oct 07
User status: Offline
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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?
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Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
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Just take the earth off.
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antnee
Member
Registered: 30th Dec 07
Location: Cov Drives: Clio 197
User status: Offline
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Usually just negative, if I need to take one off at all!
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Mertin
Member
Registered: 12th Oct 05
Location: Scotland
User status: Offline
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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]
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Bonney
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Registered: 14th Nov 04
Location: St Helens
User status: Offline
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Have never took a battery off unless i was replacing it.
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AlunJ
Member
Registered: 3rd Apr 07
Location: Newport
User status: Offline
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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
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Sam
Moderator Premium Member
Registered: 24th Dec 99
Location: West Midlands
User status: Offline
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quote: Originally posted by Chris x
Just take the earth off.
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JaffaTB
Member
Registered: 7th Oct 09
Location: Sheffield, South Yorkshire
User status: Offline
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quote: Originally posted by Bonney
Have never took a battery off unless i was replacing it.
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Mike
Organiser: North West and North Wales Premium Member
Registered: 20th May 06
Location: nr. Skipton, North Yorkshire
User status: Offline
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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]
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adiohead
Member
Registered: 28th Sep 01
User status: Offline
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Negative
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pow
Premium Member
Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
User status: Offline
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I never unhook it lol!
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LeeM
Member
Registered: 26th Sep 05
Location: Liverpool
User status: Offline
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negative if i have to
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adiohead
Member
Registered: 28th Sep 01
User status: Offline
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I had to unhook mine the other day to reset my electric folding wing mirrors.
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spikedjack
Member
Registered: 16th Oct 08
Location: wolverhampton/cannock
User status: Offline
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always N P P N removal then refitting
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Matty W
Member
Registered: 31st Jan 11
Location: Ashton-in-Makerfield, Greater Manchester
User status: Offline
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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
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Dan
Premium Member
Registered: 22nd Apr 02
Location: Gorleston on Sea, Norfolk
User status: Offline
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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
Member
Registered: 10th Sep 03
User status: Offline
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My negative is on a quick release so I take that one off
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