Fuse BOTH leads at the battery...73Gil, W1RG
From: Vic Rosenthal <k2vco....@gmail.com>
To: Clay Autery <k...@montac.com>
Cc: elecraft@mailman.qth.net
Sent: Tuesday, June 27, 2017 11:53 AM
Subject: Re: [Elecraft] OT: 2017 Chevy Silverado 1500 power outlets
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 <k...@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, donov...@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
>>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmoo...@bellsouth.net
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
