Clay, I believe it has to do with danger to your equipment should the connection between the battery and the chassis open. In that case all the current to all the automobile systems, from starter to lights to ignition, radio, etc., would flow through the ground path provided by the radio if it is connected directly to the negative battery terminal. Since that can be 100's of amperes when starting the engine, no radio is likely to survive.
73, Ron AC7AC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Clay Autery Sent: Tuesday, June 27, 2017 8:21 AM To: [email protected] Subject: Re: [Elecraft] OT: 2017 Chevy Silverado 1500 power outlets Horse puckey! I DEFY you to prove the physics OR math of that ridiculous statement. ______________________ Clay Autery, KY5G On 6/27/2017 9:55 AM, [email protected] wrote: > WARNING! > > > For extremely important safety and fire prevention reasons reasons, no > accessory should ever be connected directly to the negative terminal > of an automotive battery . Just like when charging an automotive > battery, the negative lead of a cable running directly to the battery > should always connect to the engine block and never directly to the > battery. > > > The positive lead must be fused where it connects to the battery. > > > There's an excellent discussion here: > > https://www.w8ji.com/negative_lead_to_battery.htm > > > 73 > Frank > W3LPL ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
