Step 1 connect your length of wire to a metal stake in the ground.
Ground rod resistance to earth.
Run the wire to your test location.
In areas where driving ground rods may be impractical the two point method can be used.
Ground ring ground rods.
In some instances ground rods can be installed in areas where the earth has a lot of resistance.
Treatment of the soil.
If you do not have one already you can easily install a ground rod for your home.
For instance if a ground rod is driven into a very rocky and dry area it may not conduct electricity into the ground well.
Four of the most common methods of ground resistance testing used by test technicians are discussed below.
You should measure the resistance of an electrode with respect to the surrounding soil in the area.
Make sure that you have stripped back the insulation from both ends of the wire to allow for a good connection.
The goal in ground resistance is to achieve the lowest ground resistance value possible that makes sense economically and physically when contacting the earth also known as the soil ground rod interface.
The lower it is the better job it does.
If this is the case for your ground rod the best solution is to drive a different rod into a different location.
Go back to ways to improve earth electrode resistance 3.
It is beyond the scope of this manual to recommend the best treatment chemicals for all situations.
2 point dead earth method.
To properly test the resistance of a ges you must follow some simple rules.
The function of any ground rod is to dissipate the current that is recovered in any faulty electrical circuit near your house to the earth surrounding the ground rod.
Chemical treatment of soil is a good way to improve earth electrode resistance when you cannot drive deeper ground rods because of hard underlying rock for example.
For example the national electric code requires no greater than 25 ohms of resistance in a ground system.
Unfortunately as time goes by factors such as ground rod corrosion soil moisture high salt content high temperatures and loss of contact of your wires as well as others may increase the resistance of ground rod s hence affecting its effectiveness.
For a safe electrical system your ground rod resistance should have a very low resistance value.
