[Amps] Amps Digest, Vol 64, Issue 29

[Mike Saculla]

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