[Elecraft] ECOM scare -- FW: Soldering lesson

[Mel Farrer]

AT&T had a school in Oakland training people how to maintain office 48 VDC battery banks.  They had a display of the top of one of the BIG office batteries with a 12" spanner some idiot used to tighten the terminals.  The middle of the spanner was gone.  Point well made.
Mel, K6KBE

      From: Ron D'Eau Claire <ron at cobi.biz>
 To: elecraft at mailman.qth.net 
 Sent: Saturday, February 18, 2017 2:14 PM
 Subject: Re: [Elecraft] ECOM scare -- FW: Soldering lesson
   
I worked with a guy missing his ring finger after accidentally getting his
wedding band across the high-current supply bus and the airframe in an
aircraft console. The ring immediately welded to the current source so he
could not move his hand. He said that he passed out from the pain as the
metal melted into his flesh.

Others in the shop spoke of the guy who lost a hand to a metal watch band
the same way. 

I never work around a car battery or other low-voltage, high current supply
wearing jewelry. If you wear a wedding ring that you cannot or do not want
to take off, do what hospitals do and wrap a band-aid around your finger
covering it. 

73, Ron AC7AC 



-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bill
Frantz
Sent: Saturday, February 18, 2017 9:20 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] ECOM scare -- FW: Soldering lesson

Amen! I shorted my wedding ring and a wrench across a car battery once. It
burned out a small part of the ring, and left a blister that lasted a week.
I was lucky. I also got the ring off before the swelling made it impossible.
I was doubly lucky.

73 Bill AE6JV

On 2/17/17 at 5:16 PM, kevinr at coho.net wrote:

>High amperage DC is very dangerous.  You would need to have a finger or 
>hand amputated if your jewelry shorts it out.
-----------------------------------------------------------------------
Bill Frantz        | Security is like Government  | Periwinkle
(408)356-8506      | services. The market doesn't | 16345 
Englewood Ave
www.pwpconsult.com | want to pay for them.        | Los Gatos, 
CA 95032

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