Overview
Deep Earth,
Low-resistance Grounding Services
There are several styles of
grounding, but only one provides long term, maximum protection for your equipment.
Deep earth, low-resistance grounding offers these advantages:
Lowest
Resistance - We often achieve resistance well below the standard 3 Ohms, in
many cases establishing resistance as low as half an Ohm.
Best Quality
Protection - Because our grounding is "deep earth" (up to
200')
and provides the lowest resistance, it gives "dirty" electricity (surges,
lightning strikes, static electricity, etc.) the easiest path to channel itself as far
away from your equipment as possible and dissipate into the ground.
Long Term
Protection - We use the highest quality materials (such as stainless steel
rods and couplings, and bentonite sealant), and proven installation techniques, to ensure
that corrosion, weather changes, and installation damage will not impair the long term
reliability of your grounding solution.
Best ROI
- Deep earth grounding is not the cheapest solution, but it is the best for your long term
Return On Investment. It offers the
best protection for your equipment from day one, and it lasts the longest.
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Electrode Installation
 Deep
earth grounding is superior to shallow earth grounding. This fact is what sets
Grounding Perfection's grounding services apart. Our deep earth electrode
installation process produces the best possible ground with the least resistance.
Typical shallow grounding approaches only penetrate the earth 8 to 10 feet, while deep
earth grounding penetrates from 40 up to 200 feet. To achieve deeper
penetration, we designed our custom ground rod driving machine, pictured here. A
typical electrode installation process follows these steps:
A stainless steel
electrode with threadless couplings is driven from 40 to 200 feet into the ground (the
depth depends on what it takes to achieve optimal resistance).
The electrode is tested at
regular intervals while being driven to develop an earth resistance test record.
When the electrode has reached a depth where 3 ohms or less of resistance has been
established, installation is complete.
A granular sodium
bentonite compound is added to seal the electrode and to enhance contact between the earth
and the electrode, which reduces resistance.
The owner of the property
is then able to install permanent field cable connections between the electrode(s) and
building connections.
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Earth Resistance Testing
 A key component of our grounding process is earth resistance
testing. We use top-of-the-line equipment to ensure accurate measurements.
Pictured at right is the Digital Ground Resistance Tester (Model 4500) by AEMC
Instruments. Here are some of its highlight features:
Fall-of-potential method
Measures ground resistance
(2- and 3-point) and soil resistivity (4-point)
Step voltage tests and
touch potential measurements
Measures very low
resistance on large grounding systems and grids
High test current also
enable geological surveys
Includes indicators for
excess stray current, high stray voltage, high auxiliary rod resistance, and fault
connection
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Consulting/Tech Support/Field Training
Grounding Perfection also provides consultative services.
We offer troubleshooting for existing grounding-related problems on
electrical and electronic systems. This aspect of our services is called
a Ground Audit. If you are interested in a Ground Audit,
please contact us. For
any grounding problem, our audit provides color photos documenting the
problem, along with a full written summary and recommended solution.
We document all problem areas using the NEC, NFPA-780, and IEEE green
and emerald books for grounding, lightning protection, and grounding
power and electronic systems. Along with Ground Audits,
another service we provide for grounding systems installed by us is
ongoing technical support to your staff. This will enable you to
reap the maximum benefit from your deep earth grounding solution.
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