Done! :-) 73,
Eric elecraft.com _..._ > On Jun 27, 2017, at 10:09 PM, Hisashi T Fujinaka <ht...@twofifty.com> wrote: > > Yes. Rental car in Mexico, bumpy roads, and no strap to hold the battery > in place. Just heard it yesterday. > >> On Tue, 27 Jun 2017, Charlie T, K3ICH wrote: >> >> I have to ask, has ANYONE ever heard of a circumstance where the negative >> return lead from the battery to the engine block has ever failed, short of a >> battlefield situation? >> Still, probably a good idea to fuse the negative to radio wire anyway. >> >> Charlie k3ICH >> >> >> >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Vic Rosenthal >> Sent: Tuesday, June 27, 2017 11:52 AM >> To: Clay Autery <k...@montac.com> >> Cc: elecraft@mailman.qth.net >> 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 pin...@erols.com >> >> ______________________________________________________________ >> 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 ht...@twofifty.com >> > > -- > Hisashi T Fujinaka - ht...@twofifty.com > BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee > ______________________________________________________________ > 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 eric.swa...@elecraft.com ______________________________________________________________ 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
