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[TowerTalk] Equipment grounding - in shack

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Subject: [TowerTalk] Equipment grounding - in shack
From: k1ttt@arrl.net (David Robbins)
Date: Fri, 16 Nov 2001 15:30:16 +0000
its interesting that not ALL equipment supplied for ham use has 3 prong plugs. 
rcs-8v control boxes, comtek 4-sq control boxes, and of course most of those
external dc supplies don't come with 3 prong plugs.  most interesting are the
control boxes for antenna switches that are obviously meant to connect to
devices outside the shack.

K7LXC@aol.com wrote:
> 
> In a message dated 11/15/01 10:04:37 PM Pacific Standard Time,
> Bgsalesmel@cs.com writes:
> 
> > Had always read that everything should be grounded to this single point.
> >  Looking at my RCS-4 coax switch, MFJ P/S, and Ham rotor controller I don't
> >  see any "Gnd" connection points provided - yet their diagrams show "earth
> >  ground" symbols. What is the drill here? Just remove a screw from the
> covers
> >  and insert a full ring connector for a ground wire to then be
> run/attached?
> 
>     The purpose of a Single Point Ground System (or any  ground system for
> that matter) is to keep lightning transients and charges OUT of the building
> and away from equipment so the cables to the aforementioned equipment are
> what needs to be connected to the Single Point. Then the potential transient
> damage entry point for this equipment is the power coming into the house
> which ideally would have its own transient protection. Or unplug them in
> event of a thunder storm.
> 
>     Here on the West Coast we have very little lightning activity compared to
> just about everywhere else so you don't need anything elaborate for a minimal
> ground system.
> 
>     The aforementioned equipment meets grounding codes via their 3-pronged
> power plugs so I wouldn't necessarily do anything more to them; you might run
> into a ground loop by connecting them all together anyway.
> 
> Cheers,
> Steve     K7LXC
> Tower Tech
> 
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-- 
David Robbins K1TTT
e-mail: mailto://k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net

List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!!  http://www.anwireless.com

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