[TenTec] Earth those feeders

[Jim Brown]

On 9/12/2011 1:18 PM, Stuart Rohre wrote:
> With so many chassis these days connected to AC third wire ground, it is
> all the more necessary to isolate the feeders from those radios.

NO!  Two huge misconceptions here.  First, BY LAW, the chassis of 
anything connected to the AC line MUST be bonded to the green wire.  
This has been LAW for MANY years, it is not new. The sole exception is 
for equipment whose exposed metal that is double insulated from the 
power line, in which case it can have a two-wire plug. No ham gear falls 
into this catagory.

Second, ALL grounds in any premises MUST be bonded together for 
lightning safety, AND BY LAW.  That includes the power system, telco 
arrestor, CATV grounds, cold water (if conductive), building steel, and 
ALL antennas, ham or otherwise.

Read the NEC. Study IEEE materials and Standards on grounding.  This is 
what they say, and the engineers who wrote them are a lot smarter than 
anyone on this list.

73, Jim Brown K9YC