Re: Panel Grounding vs. Lightning Rod Grounding

What about lightning hitting an external bell box, would their not be a risk
of the lightning setting fire to the bellbox cable, which works its way
through the house to the panel.. Then it has to go through the panel
(blowing that up) before it gets to the panels ground....

The bell box cable could have set the house on fire before that point
through....


"Robert L Bass" <Sales@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:R9KdnVz9W6GU70vVnZ2dnUVZ_tzinZ2d@xxxxxxxxxxxxxxx
"RockyTSquirrel" wrote:

Now the electrical system is required by law to have its own ground rod.
and the telephone d-mark box is required to be bonded to the electrical
ground.

but a metal pipe that goes into the ground will also serve as a earth
ground
too.
(I've found sometimes that a metal water pipe will have a better earth
ground than the electrical ground rod.)
(more surface area in the ground than the 10' rod.)

The ground on the alarm panel is not intended to protect against a direct
hit to the house. However, a bonded ground will protect against ground
strike lightning or a nearby hit such as Bob C's tree. What you're trying
to do is make certain that there is only one ground for all systems in the
structure. This includes water pipes as well as all electrical and
communication circuits.

When lightning hits the earth the energy spreads out like ripples on a
pond. Current flows from the central point outward along the surface of
the Earth. The ground is not as good a conductor as the wiring and
plumbing pipes in your home. If you have two or more separate grounds in
your home, lightning can enter through one and exit through another,
destroying lots of stuff along the way. By bonding the grounds together
you eliminate the potential between various grounds and reduce with it the
propensity of the lightning to visit your alarm, your TV, etc.

--

Regards,
Robert L Bass

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DIY Alarm and Home Automation Store
http://www.bassburglaralarms.com
Sales & Tech Support 941-925-8650
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