Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!iuvax!cica!tut.cis.ohio-state.edu!att!cbnewsk!rmrin
From: rmrin@cbnewsk.ATT.COM (r.m.rickert)
Newsgroups: sci.electronics
Subject: Re: How can I recognize true ground?
Message-ID: <615@cbnewsk.ATT.COM>
Date: 11 Jul 89 14:07:32 GMT
References: <18425@mimsy.UUCP> <1989Jul7.155721.19105@utzoo.uucp>
Reply-To: rmrin@cbnewsk.ATT.COM (r.m.rickert)
Organization: AT&T Bell Laboratories
Lines: 8

A not perfect but quick check is to buy a tester at a hardware store 
or Radio Shack (about $3) that looks like a plug and has three leds on it.
The Micronta (Radio Shack) version also has a decal telling what the leds are 
saying.  Plug this into a grounding adapter wired into the socket and see what
the leds are telling you.  If it says you have a problem, you probably do.
-- 

Dick Rickert  AT&T Consumer Products Laboratory