But for the sake of common practice for the protection of sensitive
electronics, keeping something grounded is a good thing to do. I can
understand it from the automotive point of view to remove the negative lead
first but particularly when dealing with starter motors and whatnot, you can
also face serious consequences when the positive lead is still connected
even though the negative lead isn't. I've seen it happen, despite the fact
that it shouldn't, theoretically.
Besides, if you know what you're doing, you're careful with your spanners. I
must be 3#-)
Adios,
LarZ
--------------- TAMA - The Strongest Name in Drums ---------------
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf
Of Colin Burchall
Sent: Wednesday, 6 October 1999 18:32
To: [EMAIL PROTECTED]
Subject: Re: MD: DC surges, a warning
Tony Antoniou wrote:
> That's why you disconnect the positive lead first, and reconnect it last.
There's a very compelling reason to disconnect the NEGATIVE lead first
and reconnect it last, and that's the fact that if the spanner you're
using to loosen the terminal happens to touch any grounded metal in the
vicinity, it will not short-circuit the battery. If a spanner touches
the positive terminal and the vehicle body while the negative terminal
is still connected, there will be a big burn up that will not be
pleasant.
Electrically (ie. from the perspective of any devices connected to the
vehicle's electrical system) there is no difference whatsoever which
terminal is disconnected first, so the negative or ground terminal is
the one to remove first for the above reason.
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