[Elecraft] OT: 2017 Chevy Silverado 1500 power outlets

[Robert Nobis]

Hi Vic,

Just wondering, what is the probability that the ground cable would become either partially or completely disconnected?  In the unlikely event this might happen, simply put an appropriately rated fuse in the ground line, in addition to the one in the positive voltage line.

73,


Bob Nobis 
n7rjn at nobis.net


> On Jun 27, 2017, at 08:52, Vic Rosenthal <k2vco.vic at gmail.com> wrote:
> 
> I don't think math or difficult physics is needed. Suppose you connect the radio directly to battery, and then suppose the battery to ground cable becomes partially or completely disconnected. Finally, suppose you then try to start the engine. When the starter solenoid closes, some of the high current from the battery negative terminal flows through the negative lead to the radio, and then to ground through the radio's mounting bracket, the coax to the antenna, etc. The no. 10 ground wire might have to carry several hundred amps! Lots of things can be damaged.
> This is why negative leads should be fused, at least.
> 
> Vic 4X6GP 
> 
>> On 27 Jun 2017, at 18:21, Clay Autery <KY5G at montac.com> wrote:
>> 
>> 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, donovanf at starpower.net 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 
>>> 
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