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From: jshaver@APG-3 (John Shaver STEEP-TM-AC 879-7602)
Newsgroups: net.micro
Subject: MOV transient protectors
Message-ID: <8444@brl-tgr.ARPA>
Date: Thu, 21-Feb-85 21:16:01 EST
Article-I.D.: brl-tgr.8444
Posted: Thu Feb 21 21:16:01 1985
Date-Received: Tue, 26-Feb-85 07:49:05 EST
Sender: news@brl-tgr.ARPA
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That is not true.  You have three wires in most power receptacles
today.  At the frequencies represented by the rise-time of spikes, the
two ground-wires (or neutral) may not be zero impedance from one
another.  Thus three MOVs is a good plan.  You need also to have
indicating fuses in series with each of the MOVs to know when they
have been wiped out and need replacing by a particular heavy lightning
stroke.