[ARC5] Hallicrafters S-38 is dangerous

[Fuqua, Bill L]

  You can learn from your mistakes, but only if you get another chance. 
Safety then was quite different than now. 
No GFI outlets, no air bags, no seat belts, lead in paint, no lead free solder, Root Beer made with real root, no armor for soldiers, jeeps instead of armored Humvees...........

If you want to relish the past today and have today's safety you must compromise. 
  You put seat belts in your 57 Chevy, use isolation transformers etc. 

73
Bill wa4lav
 
________________________________________
From: ARC5 [arc5-bounces at mailman.qth.net] on behalf of Peter Gottlieb [nerd at verizon.net]
Sent: Tuesday, November 17, 2015 12:50 PM
To: J Mcvey via Arc5
Subject: Re: [ARC5] Hallicrafters S-38 is dangerous

 Having been bitten a few times as a kid I learned respect for high voltage. The extra thought processes when working around live equipment have come in handy now that I work with high voltage energy systems professionally.


Peter

> On Nov 17, 2015, at 12:02 PM, J Mcvey via ARC5 <arc5 at mailman.qth.net> wrote:
>
> In AC.DC parlance, "chassis" is what they refer to the floating B- wiring buss (I use the term "buss" loosely) . I was taken to task from folks on this terminology so I am using it as I was told was proper.  "case" or cabinet is the metal box.Pull up a schematic for the the s-38 and you will see a cap that goes between the standard conical ground symbol to the fork which represents the case.I think there is one that goes from the antenna ground terminal to the B- chassis as well. Both have a very good potential to "light you up".
> Don't take my word for it. see for yourself...
>
>
>
>     On Tuesday, November 17, 2015 4:34 AM, "hwhall at compuserve.com" <hwhall at compuserve.com> wrote:
>
>
> Those old wax/paper caps are electrically leaky and couple the "hot chassis" B- buss to
> the metal cabinet. If it shorts, the cabinet could have the full mains
> potential. Bad things can happen...
>
> I'm getting confused maybe. Are y'all using 'chassis' and 'cabinet' words the same? IIRC from when I safed my S-38E, one side of the line cord via the on-off switch connected to the B- buss & the buss was cap (& resistor in parallel) coupled to the chassis but the chassis was insulated from the cabinet by non conductive fittings so that the metal cabinet was floating.
>
>
>
> Wayne
> WB4OGM
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
ARC5 mailing list
Home: http://mailman.qth.net/mailman/listinfo/arc5
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:ARC5 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html