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[Debs.]

I`m going to do some chassis welding repairs on 'Lazarus' (my old Land Rover Seriess III) tomorrow....`trying to recollect: to prevent damage from (possibly) stray, welding current, do I need to remove the battery -ve cable or the alternator +ve cable?

[Welung666]

I always remove both cables, no idea why just always have

[Tony H]

I always remove both cables, no idea why just always have

Agreed

[Pitchfork]

I once had a Mk2 Capri that went into a body shop for repairs including new panels welded on. They did not remove battery or altenator
For several weeks after I got it back it burnt out contact breakers every 2 days then they fitted a resistor in series because there was about 20 volts coming out of the altenator
Eventually the penny dropped that the diodes had been blown during welding & they fitted a new altenator to solve the problem!

[Lazydocker]

You need to remove the battery -ve Debs. But I always just whip the battery off (or at least both terminals) as it takes a whole minute to do.

[miggcddave]

I`m going to do some chassis welding repairs on 'Lazarus' (my old Land Rover Seriess III) tomorrow....`trying to recollect: to prevent damage from (possibly) stray, welding current, do I need to remove the battery -ve cable or the alternator +ve cable?

hi i remove the battery ? and keep earth lead close to welding area sa possible . to keep welding current local . watch for any cables running through chassis   my mistake before ended up with no back lights :-/

[Tony H]

For the time it takes to pull the plug off the alternator (just in case) it's worth the effort  

[Andy B]

.....
 it burnt out contact breakers every 2 days  ......

Remind me .... what are they?          



The best thing ever to be replaced by modern electrickery.    

[Debs.]

.....
 it burnt out contact breakers every 2 days  ......

Remind me .... what are they?          



The best thing ever to be replaced by modern electrickery.    

  Agreed; `utterly pointless!

[Andy B]

.....
 it burnt out contact breakers every 2 days  ......

Remind me .... what are they?          



The best thing ever to be replaced by modern electrickery.    

  Agreed; `utterly pointless!

              very good!

[Pitchfork]

.....
 it burnt out contact breakers every 2 days  ......

Remind me .... what are they?          

Where's your coat??

The best thing ever to be replaced by modern electrickery.    

  Agreed; `utterly pointless!

[miggcddave]

I`m going to do some chassis welding repairs on 'Lazarus' (my old Land Rover Seriess III) tomorrow....`trying to recollect: to prevent damage from (possibly) stray, welding current, do I need to remove the battery -ve cable or the alternator +ve cable?

how did the welding go today  

[Debs.]

I`m going to do some chassis welding repairs on 'Lazarus' (my old Land Rover Seriess III) tomorrow....`trying to recollect: to prevent damage from (possibly) stray, welding current, do I need to remove the battery -ve cable or the alternator +ve cable?

how did the welding go today  

I`m about half way through the welding/patching; the area around the O/S rear shackle-mounting is left to complete tomorrow (weather permitting).
I disconnected the battery and alternator; so all should be electrically well when the job is competed.

[Vamps]

Good for you Deb's.......

[Marks DTM Calib]

The old trick was to remove the battery and short the pos and neg leads together.