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
>
> 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
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
--
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
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
|