Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!motcsd!hpda!hpcupt1!hprnd!clw
From: clw@hprnd.HP.COM (Carl Wuebker)
Newsgroups: sci.electronics
Subject: Re: Touching a "hot" connector
Message-ID: <1100001@hprnd.HP.COM>
Date: 19 Jun 89 20:59:05 GMT
References: <89Jun8.160452edt.10877@ephemeral.ai.toronto.edu>
Organization: HP Roseville Networks Division
Lines: 15


     To Gary, who owns the ICF-2010 with the potentially 'hot' chassis --

     Several electronics products connect each leg (hot and neutral) of the 
AC line to the chassis/green-wire ground with "Y" capacitors to reduce 
conducted EMI.  If a product like this isn't grounded (i.e. the green-wire
ground is broken at any point), the capacitors divide the AC line voltage
in half and the chassis floats at half line voltage (65v).  

     I consider a 'buzz' from any equipment pretty serious, and I recommend
tracking down and fixing the cause of the problem.

Good luck,
   Carl "nearly killed by a 'grounded' drill once" Wuebker 
   clw@hprnd * HP Roseville Networks Division * (916) 785-4296