Driving ground rods, power vs sledge

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Mule

Senior Member
Location
Oklahoma
Ok, Ive never driven a ground rod with a rotary hammer....So, how long does it take in average soil? vs a sledge......Im shopping for hammer drills....thanks Mule
 

Dennis Alwon

Moderator
Staff member
Location
Chapel Hill, NC
Occupation
Retired Electrical Contractor
The rotary hammer save a little time but more importantly it save me the hard work. At almost 58 I find it difficult to drive the rods. The rotary hammer makes life easy. If that was all I needed the rotary for I wouldn't have bought it but I use it often for other tasks.
 

480sparky

Senior Member
Location
Iowegia
I've never spent more than 30 seconds, regardless of dirt, soil, frost, rocks, water pipes, etc.

Hilti1.jpg


Hilti4.jpg


Hilti3.jpg


Hilti2.jpg


Hilti TE905AVR.
 
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480sparky

Senior Member
Location
Iowegia
I guess an 805 or a 905 goes on my wish list then. Thanx for the info!:smile:

The ground rod kits are hard to find. i got lucky and bought the whole kit from a lineman neighbor who didn't need his any more. He had only used it 2 or 3 times, so it was next to new.

Now I'm gonna make you ill.... I paid him $600 for it all.
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
So, how long does it take in average soil?
Typically 30 to 45 seconds. About 2 minutes was the longest. I have a Bosch SDS-Max rotary hammer. I'm not sure of the model number.

I have a driver bit for 1/2", 5/8", and 3/4" rods. I had a 1/2" galvanized rod get stuck in the driver once, but I got it out. Copper fits great.

It's also great for drilling and boring 3/4""-and-up holes in masonry and concrete. Core bits (basically percussion carbide holesaws) are the greatest.

Imagine making an all-but-polished 4" hole through a 1'-thick concrete or brick wall, or through a concrete floor.
 
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B4T

Senior Member
I have always used a hammer drill to drive ground rods without the rod driver.. they were not always around. Can you harm your hammer drill doing that?? My Bosch still works great, BUT I could of been lucky :grin:
 

Fulthrotl

~Autocorrect is My Worst Enema.~
I've never spent more than 30 seconds, regardless of dirt, soil, frost, rocks, water pipes, etc.

Hilti1.jpg


Hilti2.jpg


Hilti TE905AVR.

these two are what's in my toolbox. i never got the spiffy doodle
lever operated ground rod grippie thingie.

however, i do have a number of fun toys for it... clay spade, concrete
bushing hammer, 6x6 soil tamper, and a number of chisels.

they make a spring steel scraper for taking up vinyl flooring i wished i had
today... but i promised myself never to do anything like this again, so
i'll never need it.... :D

ick.jpg


i got mine used off of ebay for $380, and it's got some miles, but quite
serviceable..... altho not as shiny and purty as yours is....

a word of warning to prospective purchasers... this tool takes only hilti
tools, and hilti, judging by the pricing, makes them out of pure
unobtanium or something. a clay spade for any generic jackhammer, $75.

for this fine example of german pricing, $275.

you have been warned. even at that, it's an excellent tool. it'll drive a
8' ground rod in 30 seconds or so, just like the man says.... if you need
to drive it thru a 12" concrete fire main, allow another 15 seconds.
 

480sparky

Senior Member
Location
Iowegia
.....
however, i do have a number of fun toys for it... clay spade, concrete
bushing hammer, 6x6 soil tamper, and a number of chisels.

they make a spring steel scraper for taking up vinyl flooring i wished i had
today... but i promised myself never to do anything like this again, so
i'll never need it.... :D

.......

I loaned mine to a builder one time to pull up a floor just like your pix. He bought the scraper, and gave it to me when he was done. I think I came out ahead on that deal!

I've got the clay spade and several chisels, some of which have never been used. Got a good deal on them on fleabay, and couldn't pass 'em up.
 
I think I can able snag one in European area but the #1 issue is the voltage unless I can able get a 120v verison of it and bring it back to state and use it.


Yeah I did have it here in France I borrowed from one of the electrician and dangbat it work better than I expected to drive a 4 meter rod in and it took me 3 min flat and all done with it.

Merci,Marc

Not sure price is about $1000 Euro. I can able dig it up for excat price
 

Fulthrotl

~Autocorrect is My Worst Enema.~
I loaned mine to a builder one time to pull up a floor just like your pix. He bought the scraper, and gave it to me when he was done. I think I came out ahead on that deal!

thanks. rub it in. i think i hate you now.;)

of course, i could get over it and become your newest best friend if you
lent it to me if i ever have to do this again......:D

however, it wasn't all bad... jill was grumbling about having to build excel
spreadsheets for work, so i had her come in and scrape a couple 4" passes.
she did it for 5 minutes, announced "this sucks. you're crazy to do this",
and went back to her spreadsheets, happy as a clam to be doing them
instead of the floor.


randy
 

masterinbama

Senior Member
You all have to remember 480sparky is in central Iowa. I have more rocks in my front flower bed than he will find in a 40 acre field. They don't call it Limestone County Alabama for nothing.
 

Kdog76

Senior Member
I've been on both sides of the equation. Summit County, CO you couldn't really go more then 3-4" in some spots w/o hitting BIG ROCKS. Mostly driven in by hand with a sledge. Now, here in WI I've used the Dewalt corded rotary hammer w/ the driver bit. There too, it can still hang up on rocks & such, but will usually break on thru after a while. Had one with a rock shelf going from about 4' down. Inspector told us there's a big rock shelf in that area, that no one could pound an 8' rod in that part of the county...
We tried anyway, we failed...
 
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