Ground Rod

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kiss

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I need some advice. I am new to the NEC, and have not installed any ground rods in my area.( no requirement till now) I have a low cieling 7 ft
and I drilled a few pilot holes and I am hitting rock. Any advice for an easy way to drive a ground rod inside in this condition. Going outside of the building is not an option.
Thanks
 
Re: Ground Rod

A ground rod is required as a second ground.
I am hitting rock after about 12-16 inches straight down and on an angle. A trench is my last option.
 
Re: Ground Rod

If you are in a basement or crawl space why not drill a hole in the wall, 2' below grade, and install it horizontally?

I do not understand your set-up.

Mike P.
 
Re: Ground Rod

Kiss
If you are following 250.53(D)(2), you will most likely be required to have two ground rods 250.56 :eek: , in your case maybe a real hardship. Talk to your AHJ as he may have an alternate solution for your dilema.

Pierre
 
Re: Ground Rod

Need a quick clarification on UFER grounds. If UFER is installed properly ... is there a NEC requirement for secondary electrode ( waterpipe or rod ). If NO ... then doesn't the cold water & gas pipe still have to be bonded to the main panel ground under 250.50 ???
 
Re: Ground Rod

Eagle

I did not see the other post. http://www.mikeholt.com/codeforum/ultimatebb.php?ubb=get_topic;f=11;t=002546;p=1#000002

I will leave this post but lets do any follow ups on the other post.

The water lines always have to be bonded. The gas if they can become energized. Inspectors here allow the egc connected to the equipment to "effectively" bond or ground the gas lines.

Here is a thread with "some" bonding issues in it. http://www.mikeholt.com/codeforum/ultimatebb.php?ubb=get_topic;f=7;t=000591;p=1 ;)

Mike P.

[ December 26, 2003, 04:47 PM: Message edited by: jxofaltrds ]
 
Re: Ground Rod

This is the situation. Primary ground is my water pipe. Secondary ground is a ground rod. As described I am hitting rock. I tried drilling on a 45 degree and still hit rock. I also tried horizontally and still hit rock? I was wondering If someone had a better idea? The basement floor is concrete and a trench is not an option.Thanks for all your help.
 
Re: Ground Rod

The allowed methods for installing a ground rod are in section 250.52(G).
Can you lay the rods in the service ditch line?
 
Re: Ground Rod

NOT an OPTION. We were able to use a 36 inch bit and then hammering the rest of the way. What a *itch . There got to be a easier way.

[ December 29, 2003, 12:30 PM: Message edited by: kiss ]
 
Re: Ground Rod

Give it up guys. If it is not possible to install ground rods, try something else. Plates? Pipes? Ground rings?
How does the water get to this building? Is there room next to the water pipe for a plate?
Did the building have re-bar in the footings? Is it possible to chip some concrete off, and attach to the rebar?
Call in a well driller and have him drill a 20 foot hole, or two 8 foot holes. They can drill through solid rock. Fill with salt slurry mud.
Have a back-hoe operator dig a trench 40 inches down, and 20 feet long, throw in your ground rods.
 
Re: Ground Rod

As I stated before "If you are in a basement or crawl space why not drill a hole in the wall, 2' below grade, and install it horizontally?"

Is this not possible?

Mike P.
 
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