Any EE wil tell you that convention is to switch the hot not the ground or
neutral. Yes, I know that Lucas has been guilty of switching ground in some
cases but "that don't make it right".
When disconnecting a battery with a wrench it is best to remove the ground
first so as to avoid the possibility of shorting the hot to ground with the
tool. I have seen someone get seriously burned that way. I think this is
the information which causes the two schools of thought on this.
I always prefer to follow conventional procedure wherever possible.
George
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