Re: protection

["Norm Mugford" <1alarm@xxxxxxxxxxxxx>]

So you go to someone else's web sites to get
your info Mr. BAss?

Try going to the BBB website to get your
own poor business info.

Norm Mugford




"Robert L Bass" <robertbass1@xxxxxxxxxxx> wrote in message
news:yIKdnQ0ifq7Y7zPYnZ2dnUVZ_q-vnZ2d@xxxxxxxxxxxxxx
>> Most critical is that the earthing be single point.
>> Every incoming wire must earth to the same
>> earth ground.  Each structure must have its
>> own single point earthing...
>
> Very true.  If every incoming service on the structure is connected to a
> single point ground there is a significant reduction in damage from
> lightning.  This is particularly important for sensitive electronics such
> as security and home automation systems.
>
> Unfortunately, even when the installer correctly earth grounds the alarm,
> his system may still be unprotected if other tradesmen don't follow code.
> In many areas the worst offender is the CATV company.  They were notorious
> in New England and they still are in Florida for failing to ground at all,
> grounding improperly to metal siding, piggy backing onto the electric
> panel ground, etc.
>
> I routinely discuss bonded grounds with DIYers, especially on new
> construction.  Just as with propfessionally installed systems, other
> tradesmen are often at fault.  Most electricians get it right but
> plumbers, CATV and even some telco installers screw up.  I also noticed
> when I first brought the subject up in this newsgroup some years ago that
> some alarm techs are unaware of the importance of a bonded (aka single
> point) ground.
>
> On a related subject, it bears repeating that the panel ground needs to be
> as short as possible.  Bends in the ground cable should be radiused -- no
> hard 90 degree turns.  The best connection point it a ground rod sunk into
> the earth.  Never ground an alarm panel using an electrical outlet ground.
> There are a few plug-in transformer which include a ground terminal.  Do
> NOT use that terminal. It will not provide proper protection for the alarm
> system's electronics.
>
> Mike Holt has useful information on grounding, bonding, etc., on his
> website at mikeholt.com.  Note that most of his information concerns
> safety grounding (keeping people alive) whereas the primary concern for
> alarm installation is protective grounding (keeping electronics alive).
> Nonetheless, it's a very helpful website.
>
> --
>
> Regards,
> Robert L Bass
>
> =============================>
> Bass Home Electronics
> 941-866-1100
> 4883 Fallcrest Circle
> Sarasota · Florida · 34233
> http://www.bassburglaralarms.com
> =============================>
>


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