[Elecraft] Issue 12 re Astron Power Supply

[Don Wilhelm]

Charlie,

That wire in the Astron PS has nothing to do with that statement.  If 
you read carefully, you will find it applies to the "station ground" 
which may be a separately driven ground rod - which for your safety and 
that of your family and pets as well as your equipment and also to 
comply with NEC requirements, that separately driven ground rod MUST be 
connected to the electrical entry ground rod by a #6 or larger copper wire.

If your shack ground rod does not comply, dig a trench for the wire and 
make that connection outside the building.

The only exception is if the two ground rods are more than 100 feet apart.

73,
Don W3FPR

On 4/16/2018 8:38 AM, Charlie T wrote:
> "This greatly increases the chances for damages to station equipment and all other electronic equipment in the household in event of a lightning event."
> 
>   What is, disconnecting the wire or leaving it in place?
> Your comment can be taken both ways.
> 
> 73, Charlie k3ICH
> 
> 
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Joe Subich, W4TV
> Sent: Monday, April 16, 2018 8:11 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Issue 12 re Astron Power Supply
> 
> On 2018-04-15 10:38 PM, hawley, charles j jr wrote:
>> I disconnected the black wire. When it was connected, much of the
>> current that would have passed thru the negative power wire from the
>> power supply to the rig was shunted thru the green power cord wire,
>> the ground buss bar, and other ground connections.
> More importantly, if the "station ground" - the ground from the antenna entry panel - is not bonded to the power entry ground, a lightning event can be carried from the chassis of the power supply back through the electrical system safety ground to the power entry *or vice versa* depending on the location of the "strike".
> 
> This greatly increases the chances for damages to station equipment and all other electronic equipment in the household in event of a lightning event.
> 
> 73,
> 
>      ... Joe, W4TV
> 
> 
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