Originally Posted by pedrobogus
Three questions. If I use a second grounding rod for grounding my antenna and I need to connect it to the house's main ground rod - does this mean I can use one of these grounding claps (http://www.doityourself.com/invt/2528651
) to the main pipe that has the electric service going in to the house with a 6 awg wire? Can I connect the coax grounding block to the same clamp with a 10 awg wire? Is a 4 foot ground rod too short or does it meet code requirements - I am in Wisconsin? I want to make sure I do this right.
on the grounding rod for the antenna and mast/tower use one grounding clamp to attach to the antenna/mast/tower, use a second grounding clamp to connect to your house grounding system. you could use the clamp you stated to attach the house end of the grounding system if it makes its grounding through a water pipe, if your house grounding is to a grounding rod then use a rod clamp. your use of the term 'main pipe' is unclear if you are referring to a water pipe or electrical conduit (service mast or from meter to breaker box). Putting a clamp in water pipe is OK, putting a clamp on electrical conduit is not, you want to connect to whatever is the grounding electrode (water pipe or ground rod) for the house. the clamp you show is for attaching to a copper water pipe not electrical conduit.
the coax grounding block which should be outside your house should run to the antenna/mast/tower grounding rod. you could use a third grounding clamp or use a split bolt connector and connect it to the wire grounding the antenna/mast/tower.
an 8 foot long grounding rod meets the code requirements.
also having a lightning arrestor (spark gap or gas) before the grounding block will better protect things. the grounding block only grounds the coax shield adding the lightning arrestor grounds the center conductor for high voltages.
use 6AWG to ground the grounding block if it will fit the connecting point or the largest wire that will fit.