Think anything like grounding as foundation of house that would hold all the electrical system. Without that, whole thing would come tumbling down. The ground testing could fall in two categories and that is one that ensure the installation shall meet the ground specifications and those that make sure that it would meet the specification.
It really is recommended that the ground and ground connections should be checked annually as part of normal predictive plan. There should increase in resistance at more than twenty percent in measured during the periodic test, technician must investigate source of problem then make corrections to lower resistance via adding or replacing rods to ground system.
In testing the level grounds in the system, you have to measure its resistance that is between the ground connection and the earth. That would not be straightforward at it looks like. The results would be approximation even though one would be dealing it with the precise measurements. Those variables which affect measurements could and would do in changing the readings.
The driving electrode grounded deeper is very effective path in lowering ground resistance. The soil should not be consistent in resistivity and could unpredictable. Resistance level could generally reduce via additional forty percent and doubling length of the ground electrode, sometimes it is impossible in driving the rods deeper especially in areas that has lots of rock.
One could have several methods in doing it. And all of those used least of two reference in current source and ground points. Testing device would circulate the current throughout ground for test. Those testers that was used bridge method is common. The use currents on order in milliamps. And some in high end that use over one hundred a.
The bonds or connections would be loosened over time. Wrong materials that was used in forming the initial connection could fail in even after adequate previously. The corrosion could damage those connectors and rods. In extreme case, the chemicals that were contained in dissolved rods which has fully tested in installation.
The rod is for lacking in bonding to rest of system and was irrelevant. Those assumptions were two hundred fifty feet or so in soil that is between the system and the machine rod that provide the low impedance. The test would show the need of bonding jumpers and other changes.
Fall potential of test method used in measuring ability of earth system in grounding or individual electrode in dissipate energy from site. Land electrode in interest should be disconnected. Tester then connected to earth electrode. Two earth rods are then placed in soil in very direct line mostly away from electrode for three poles of potential testing. The spacing of twenty meters normally be enough.
Clamp in tester ground could be indispensable tool. However, its simplicity could also lead in trouble. A lot of end users have tended in clamping around convenient point then take away reading without any question. The outcome is becoming unwelcome in some industry. The user must test the equipment in principle of the operation in where it would not and will work.
It really is recommended that the ground and ground connections should be checked annually as part of normal predictive plan. There should increase in resistance at more than twenty percent in measured during the periodic test, technician must investigate source of problem then make corrections to lower resistance via adding or replacing rods to ground system.
In testing the level grounds in the system, you have to measure its resistance that is between the ground connection and the earth. That would not be straightforward at it looks like. The results would be approximation even though one would be dealing it with the precise measurements. Those variables which affect measurements could and would do in changing the readings.
The driving electrode grounded deeper is very effective path in lowering ground resistance. The soil should not be consistent in resistivity and could unpredictable. Resistance level could generally reduce via additional forty percent and doubling length of the ground electrode, sometimes it is impossible in driving the rods deeper especially in areas that has lots of rock.
One could have several methods in doing it. And all of those used least of two reference in current source and ground points. Testing device would circulate the current throughout ground for test. Those testers that was used bridge method is common. The use currents on order in milliamps. And some in high end that use over one hundred a.
The bonds or connections would be loosened over time. Wrong materials that was used in forming the initial connection could fail in even after adequate previously. The corrosion could damage those connectors and rods. In extreme case, the chemicals that were contained in dissolved rods which has fully tested in installation.
The rod is for lacking in bonding to rest of system and was irrelevant. Those assumptions were two hundred fifty feet or so in soil that is between the system and the machine rod that provide the low impedance. The test would show the need of bonding jumpers and other changes.
Fall potential of test method used in measuring ability of earth system in grounding or individual electrode in dissipate energy from site. Land electrode in interest should be disconnected. Tester then connected to earth electrode. Two earth rods are then placed in soil in very direct line mostly away from electrode for three poles of potential testing. The spacing of twenty meters normally be enough.
Clamp in tester ground could be indispensable tool. However, its simplicity could also lead in trouble. A lot of end users have tended in clamping around convenient point then take away reading without any question. The outcome is becoming unwelcome in some industry. The user must test the equipment in principle of the operation in where it would not and will work.
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