grounds [RE-wrenches]

[Drake Chamberlin - Electrical Energy]

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My recollection of the code on this is that of two rods are within six feet 
of each other, they should be bonded together.

Despite the current code, I believe that it is a bad idea to ground array 
frames to system neutrals.  Lightning surges are conducted directly into 
the system.


At 04:30 PM 08/03/2001 -0600, you wrote:

>Hi Wrenches,
>
>I have a question on grounding systems.  I know that the NEC calls for only
>one ground rod and if there is more than one they should be linked with a
>line of wire.
>
>OK, but what about a ground rod for a lightning arrestor (lightning rod)?
>While the lightning arrestor is installed primarily to avoid lightning, it
>also serves a secondary purpose of sending the lightning to the ground if
>lightning strikes the arrestor.
>
>Should the ground for the lightning arrestor also be tied to the ground for
>the system?
>And, if it is tied to the negative ground of the system, wouldn't that
>allow a lightning strike to flash through the negative line of the system
>to batteries, controller and modules?
>
>Ned van Steenwyk
>Soluciones Energeticas
>Honduras
>
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