[Amps] Amps Digest, Vol 64, Issue 29

[k7rdx]

The reasoning for removing the negative terminal first is the fact that the 
metalic tool used for removal could come into contact with the grounded 
structure of the car...Not a good thing if you remove the positive terminal 
first..The negative should always be the last connection when re-connecting 
the battery for the obvious same reason...Of course do the reverse for a 
positive ground car...Jim, K7RDX...40+ years in the collision repair 
field..I have seen technicians do all sorts of crazy things..
----- Original Message ----- 
From: "Mike Saculla" <fqm at msn.com>
To: <amps at contesting.com>
Sent: Friday, April 18, 2008 9:06 AM
Subject: Re: [Amps] Amps Digest, Vol 64, Issue 29



This presents an interesting question. When working under the hood of your 
car, it is recommended you disconnect the negative lead to the battery for 
safety. Why the negative lead? When you disconnect the positive lead, the 
positive connection on the battery is still "hot" to the engine, frame, 
body, etc. of the car. An accidental short from the positive terminal to the 
car body is still bad news. If the negative terminal is opened, then the 
positive terminal of the battery is only "hot" to the negative terminal of 
the battery and not the body, frame, etc. I'm not saying this is what Larry 
wants to do, just a little food for thought.

Mike K6MDS

--Forwarded Message Attachment--From: daclark56 at hotmail.comTo: 
aa7lr at msn.com; amps at contesting.comDate: Tue, 15 Apr 2008 
20:49:26 -0400Subject: Re: [Amps] where to interrupt powerEither will work, 
but if it has a neg. ground I would cut the pos.73KD8Z ----- Original 
Message ----- From: "Larry Ravlin" <aa7lr at msn.com>To: "amps" 
<amps at contesting.com>Sent: Tuesday, April 15, 2008 8:30 PMSubject: [Amps] 
where to interrupt power  I am going to put a switch across a 12v auto 
battery to interrupt power in case of whatever. Should I break the circuit 
between the negative terminal and ground or between the positive terminal 
and the load? Larry L. Ravlin AA7LR EX KØAEY & 
KD7BXRaa7lr at msn.com<mailto:aa7lr at msn.com>Extra class @ 20WPMFISTS #12867
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