Topband: RFI - and lots of it

[Jim Brown]

Yes, or where other premises grounds are tied together. Systems like 
Telco, CATV, satellite, even lightning rods if there are any, building 
steel if there is any.

73, Jim

On Fri,10/30/2015 11:03 AM, Dan Edward Dba East edwards wrote:
> 'central point' being my main service breaker box?
> it's a good distance away from any plumbing...
>   
>
>
>       On Friday, October 30, 2015 12:28 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
>     
>
>   No, that should be done at a central point in each premises, and only
> when the plumbing is metallic and conductive to the earth.
>
> 73, Jim
>
> On Fri,10/30/2015 9:58 AM, Dan Edward Dba East edwards wrote:
>> ok...another thing i've wondered about...
>> every bathroom and utility sink plus the kitchen have 120 vac outlet quite nearby..
>> should i tie the green a.c. wire to the plumbing at each?
>> w5xz
>>
>>    
>>
>>
>>        On Thursday, October 29, 2015 5:36 PM, Guy Olinger K2AV <k2av.guy at gmail.com> wrote:
>>      
>>
>>    It would really be something if in-the-slab copper was floating
>> electrically. I have seen the copper connected with a heavy wire out of the
>> slab connected to the ground bus in the main electrical panel. The other
>> end of the wire came up out of the slab next to the bonding point with the
>> copper pipe in a weather protected spot.
>>
>> If there is a question you should get a local licensed electrician who can
>> check it according to NEC + local practices. Local practices may specify
>> where and how the pipe is connected to the power ground.
>>
>> You might want to check if an ohmmeter shows a dead short between the
>> spicket copper pipe and the power ground.
>>
>> If it ain't connected, you need to get that fixed right away.
>>
>> 73, Guy K2AV
>>
>> On Thursday, October 29, 2015, Jim Brown <jim at audiosystemsgroup.com> wrote:
>>
>>> On Thu,10/29/2015 2:45 PM, Dan Edward Dba East edwards wrote:
>>>
>>>> all my plumbing is copper, hot and cold water, in the slab.  and, i have
>>>> an outside water spigot just a few feet away from my service
>>>> entrance...should I tie it in too ??
>>>>
>>> NEC REQUIRES that it be tied in.
>>>
>>> 73, Jim K9YC
>>> _________________
>>> Topband Reflector Archives - http://www.contesting.com/_topband
>>>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
>    
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband