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-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On 
Behalf Of Joe Subich, W4TV
Sent: Monday, April 16, 2018 8:11 AM
To: elecraft@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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