View Single Post
Old 25-Oct-2018, 8:53 PM   #11
gossamer
Member
 
Join Date: Jun 2011
Posts: 45
Quote:
Originally Posted by rabbit73 View Post
The code says the coax shield should be grounded using the grounding block and the mast should be grounded, each with its own separate 10 gauge copper wire connected to the house ground. Don't make a splice, use a separate split bolt for each. The split bolt is an open "U" that will surround the house ground wire when the nut for the split bolt is removed.



The diagram is a little out of date. You can fasten the coax to the mast. Many years ago 300 ohm twin lead was used instead of coax. It had to be kept away from nearby metal objects, hence the standoff insulator. Then coax came along and coax standoffs were available for it. The insulator in the standoff was designed for coax or twin lead (slot in insulator). The metal of the standoff that surrounds the feed line insulator is not closed (it's a hook), to avoid having a shorted turn around the twin lead which would affect the signals in the twin lead.
I ordered a split bolt and it's the wrong size. It's 2 str to 8 str AWG, and it's huge. Can you tell me which gauge I should purchase? Perhaps you have a specific one you recommend?

Also, just to be clear, the idea here is to strip a section of the ground wire close to the point where it leaves the house, correct? It's not possible to just add the ground wire to an existing split bolt?
gossamer is offline   Reply With Quote