From ???@0x0000081B Thu Aug 20 16:07:07 1998 Path: pitt.edu!gatech!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!Supernews60!supernews.com!Supernews69!not-for-mail From: "alan garrett" Newsgroups: sci.electronics.design Subject: Re: How much DC will kill you? Date: Thu, 20 Aug 1998 17:41:06 +0100 Organization: http://www.supernews.com, The World's Usenet: Discussions Start Here Lines: 36 Message-ID: <6rhiug$asu$1@supernews.com> References: <01bdc7b9$8e159c20$7de0accf@default><6r9k7q$l5c$1@news.ece.nwu.edu> NNTP-Posting-Host: 195.224.74.58 X-Trace: 903630607 JOYW4DCNA4A3AC3E0C usenet80.supernews.com X-Complaints-To: newsabuse@supernews.com X-Newsreader: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Xref: pitt.edu sci.electronics.design:93546 Status: O John Woodgate wrote in message ... >In article <6r9k7q$l5c$1@news.ece.nwu.edu>, Norm Flasch > writes >>A good rule of thumb used to be to keep one hand in your >>pocket while measuring voltages with the other. > I missed this posting ? Comments : Old Navy (RN) electricians used to 'find' blown 28V fuses by running the dampened knuckles of one hand down the fuse panel. 1) A fuse which was ok would only produce a circuit to 'deck' from each knuckle which they hardly felt through their footware. 2) An o/c fuse produced a shock across the knuckles, Located the fault. 3) Using the knuckles not the fingers meant that as the shock occured and the muscles in the hand contracted and the knuckles lifted from the terminals. 4) Dampening the knuckles (spit) meant that the knuckles could be run down the fuse panel very quickly but still giving sufficient contact to register. 5) The only obvious safety precaution taken was to make sure that the other hand was in one's pocket. The 'system' seems to have worked well until ships converted to 400hertz AC. This is hearsay and I am curious if anyone agrees ? Alan