Re: CAUTION

[Mark Denovich <mark@domain.elided>]

Ferdinando Di Matteo wrote:
> For newbies and a reminder to all .  Speaking about battery 
> connections-disconnections, if you expect to electric weld anything on 
> your Bosch electronic  equipped car, I believe you had better disconnect 
> both battery terminals.  Anyone disagree?   Fred
I'm not going to say I disagree... but I will say there seems to be no 
clear concensus (on the welding newsgroup) as to whether it is 
necessary.  In fact, some argue that the battery itself is a very good 
surge suppresor, so it might be better to leave it connected.

What is certain:  If you are welding on a car, make sure the ground 
clamp is as close as possible to the part that you are welding. 
Preferably it should be attached to the same piece of metal.  That 
current is going to take the path of least resistance.  By watching 
where you attach the ground you'll keep your ECUs from being part of 
that path.

Anecdotal evidence:  I tallied about 100 man hours of welding on my 
Milano last year (I used over 20lbs of mig wire in the process.)  I did 
 not disconnect anything.   I was very good about the placement of the 
ground clamp.   I had no problems.

	--Mark
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