Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!indri!aplcen!haven!mimsy!brillig.umd.edu!spector From: spector@brillig.umd.edu (Lee Spector) Newsgroups: sci.electronics Subject: How can I recognize true ground? Message-ID: <18425@mimsy.UUCP> Date: 6 Jul 89 20:17:45 GMT Sender: nobody@mimsy.UUCP Reply-To: spector@brillig.umd.edu.UUCP () Organization: University of Maryland, Dept. of Computer Sci. Lines: 12 Question from a novice: My house has "two prong" outlets. I've been told that the center screw and casing of the outlet boxes is generally grounded, so that I will have a correctly grounded outlet if I attach the wire of a "3 to 2 adapter" to the center screw. How do I (a vertual electronics know-nothing) check to see if this is working in my case? (I am doing this to comply with my computer's manual's warning not to defeat the ground plug. Is this really a serious problem? Would my surge protector (SL Waber Dataguard DG415S) be making any difference?) Thanks in advance for your time and wisdom - all comments very welcome. - Lee Spector (spector@brillig.umd.edu)