Article View: sci.electronics
Article #21741Re: Polarized Plugs
From: Erick Parsons
Date: Fri, 09 Jun 1989 23:25
Date: Fri, 09 Jun 1989 23:25
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><What is the point of 2-pronged polarized electrical plugs? (The kind ><where one prong is wider than the other.) It seems to me that the only ><difference in "signal" between the two prongs is a 1/120 second phase ><shift. It is a rare gadget indeed to which this matters. ><John Oswalt (..!sun!megatest!jao) In all likelihood (sp?) it is to keep the hot wire as completely isolated from the frame of say.. a toaster, or any appliance that could be used around a sink or tub or ? Remember that the neutral wire is the big prong ALWAYS, and is common to the service ground at the service entrance panel. If the wires were switched the frame of this toaster could be for some reason further from ground potential and become a shock hazard should some poor soul grab the toaster and the faucet at the same time. -- ------------------ // -----------Cut-Here---------------------------------- Erick Parsons // Words for the wise: *If it works don't fix it.* Sacramento Ca // mail to: ...pacbell!sactoh0!americ!erk ------------- \\// --------------------------------------------------------
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!pasteur!ames!pacbell!sactoh0!americ!erkShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!pasteur!ames!pacbell!sactoh0!americ!erk From: erk@americ.UUCP (Erick Parsons) Newsgroups: sci.electronics Subject: Re: Polarized Plugs Message-ID: <0626.AA0626@americ> Date: 9 Jun 89 23:25:45 GMT Followup-To: sci.electronics Distribution: usa Lines: 19