Ground twice -- Good or bad?

[mcsj]

My RG6 cable run about 50 feet between the dish and the entry point of my house. I have it grounded about 12 feet from the dish (with a ground rod), and I am thinking of grounding it again (to the ground wire of my house's electrical system) right before it enters my house. Should I do it?

Thanks in advance.

 

[022266]

Ummmm.... Yes! To be up to code, the Ground rod has to bonded to the Common Ground to be effective.

Here is a great site to check out

Grounding Information

 

[bnaivar]

NO! Don't ground it in two different places. It should be connected to the house ground only. If you ground in more than one location you can create a "ground loop". This will create a hum bar in the picture.

 

[mcsj]

The reason why I think of grounding it twice is that I can have a "second line of defense". Is it really unnecessary?

 

[Carl B]

You can ground it twice, but you need to have a grounding connection between your two grounds so that there isn't a difference in ground voltage on the system.

 

[022266]

bnaivar - I agree you should ground to common ground at power box,

but he asked -

I have it grounded about 12 feet from the dish (with a ground rod), and I am thinking of grounding it again (to the ground wire of my house's electrical system) right before it enters my house.

To be to code you have to back-bond the Ground rod to the common ground with #6 bare wire ( 20' max )

Sorry, I don't make the rules - I just follow them.

 

[cdru]

bnaivarTo be to code you have to back-bond the Ground rod to the common ground with #6 bare wire ( 20' max )

Sorry, I don't make the rules - I just follow them.

Not that I doubt you, but what is your source regarding 20' max? I knew about teh #6 wire bonding, but I've never seen any type of reference to a maximum distance, let alone 20'.

 

[PSB]

"The installer may use a #10 copper or a #8 Aluminum wire. The ground wire should be under 20 feet in length or attached to a ground rod and that rod connected to your electrical ground with a #6 copper wire. Since few, if any, installers carry #6 copper wire and 8 foot ground rods, your dish should be located on the same side of your house as your electrical service."

http://dbsinstall.com/Whatis/Whatisgood-5.htm

 

[022266]

what is your source regarding 20' max?

It is taken from the National Standards and Testing Program ( SBCA )

sorry If I made it seem to say you have to have 20'...
You shouldn't go over 20'

 

[W4WMM]

I know when you have two or more grounding rod's that they should be greater than six foot away from each other AND bonded together but I haven't heard of the 20' MAX rule either. Could they be referring to IF you use #10 AWG Copper for the ground since if you use a #6 it would have less resistance therefore you should be able to go further?

Do you have any URL's to provide more reading in relation to the 20' rule?