When inside the equi-potential zone created with a ground bracket, an employee is safe from what types of potential?

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Being within the equi-potential zone that is established with a ground bracket provides a measure of protection against step potential and touch potential. The equi-potential zone is designed to equalize voltages across nearby conductive surfaces, which minimizes the risk of electrical shock.

Step potential refers to the voltage difference that can occur between two points on the ground when a fault condition exists. If a person were to step from one point to another where there is a voltage difference, they could experience a dangerous electrical shock. However, being in an equi-potential zone helps ensure that the voltage is equal at all locations within that zone, reducing or eliminating step potential hazards.

Touch potential relates to the voltage difference between a grounded surface and a person or another conductive object. In an equi-potential zone, ground electrodes and conductive surfaces have equal voltage levels, so physically touching these objects does not result in hazardous voltage exposure.

In contrast, the other types of potentials mentioned in the other options do not directly relate to the protective function of an equi-potential zone created by a ground bracket. Static and dynamic potential or ground and air potential do not specifically address the electrical hazards associated with differences in voltage that the equi-potential zone is designed to mitigate.

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