On Wed, 27 Aug 2008 05:35:39 -0700 (PDT), "
wrote:

On Aug 27, 8:26?am, "David L. Martel" wrote:
Andy,

? ?My phone box was installed by the phone company, Verizon. It is not near
the electrical service box. It has it's own ground rod.

Dave M.

ALL GROUNDS MUST BE UNIFIED!! Thats why the want the box by the
service entrance. seperate ground rods can create a different voltage
on grounded things, like during a lightning strike, that can be
dangerous

Didn't my Ademco burglar alarm come with instructions to install a
separate ground rod? It's connected to the board and not the power
supply, I think to prevent induced voltages from lightning from
ruining the alarm.

It would have been a lot easier to just hook up to the electrical
ground, but I did what the instructions said.

It's been 25 years but I still have the instructions. I will check
later.