Tag: resistance

Grounding Essentials
Why are 94Hz, 105Hz, 111Hz, and 128Hz frequencies used for earth ground resistance meters?

Why are 94Hz, 105Hz, 111Hz, and 128Hz frequencies used...

Numerous studies going back many decades have shown that ground resistance measurements...

General Grounding
What are some different types of grounding electrodes?

What are some different types of grounding electrodes?

The National Electric Code requires that the grounding electrodes be tested to ensure...

General Grounding
How To Do Electrical Grounding System Testing

How To Do Electrical Grounding System Testing

The 3-point or fall-of-potential method is used to measure the resistance-to-ground...

Grounding Essentials
What Is Soil Resistivity Testing?

What Is Soil Resistivity Testing?

Electrical resistivity is the measurement of the specific resistance of a given...

Grounding Essentials
What Is Ground Potential Rise and Earth Potential Rise?

What Is Ground Potential Rise and Earth Potential Rise?

The voltages produced by a Ground Potential Rise or Earth Potential Rise event can...

Grounding Essentials
What is Step and Touch Potential and Reducing Resistance To Ground?

What is Step and Touch Potential and Reducing Resistance...

Step potential is the step voltage between the feet of a person standing near an...