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Old 11-06-2008, 10:50 PM   #1
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burying ground rod


I believe I read here that rather than driving a ground rod you can bury one 24" deep (I plan to drive the 2nd for my subpanel the ole fashioned way). Since I will be trenching to run the electrical to my garage, is it acceptable to bury the ground rod in that same trench (it will be aligned in the same fashion as the electrical run)?

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Old 11-07-2008, 10:16 AM   #2
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burying ground rod


Burying in that fashion is only permitted IF you have rock or something that prevents driving straight in.

I found the code section
"250.53(g) shall be driven to a depth of not less than 8' ,except that where rock bottom is encountered it ....."
The rest says up to 45 angle unles you can't get that either then a trench 30" deep can be used.


Last edited by joed; 11-07-2008 at 10:30 AM.
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Old 11-07-2008, 10:22 AM   #3
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burying ground rod


Rods should always be driven first, then at a 45 degree 2nd, and if all else fails, it is allowed to lay a rod in at least 2' 6" of soil, but you still need two rods and the garage and they need to be 6' apart.







All rod and pipe electrodes must have at least 8 ft of length in contact with the soil,
regardless of rock bottom. Where rock bottom is encountered, the electrodes must
either be driven at not more than a 45-degree angle or buried in a 2 1/ 2-ft-deep trench.
It should be noted that driving the rod at an angle is permitted only if it is not possible
to drive the rod vertically to obtain at least 8 ft of earth contact. Burying the ground rod
is permitted only if it is not possible to drive the rod vertically or at an angle.
Ground clamps used on buried electrodes must be listed for direct earth burial. Ground
clamps installed aboveground must be protected where subject to physical damage.






Last edited by chris75; 11-07-2008 at 10:32 AM.
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Old 11-07-2008, 10:33 AM   #4
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burying ground rod


You could use a plate electrode. They only need to be buried minimum 30" deep.
250.53(h)
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