NCCER Industrial Maintenance Electrical & Instrumentation (IME&I) Practice Exam

Question: 1 / 400

Where must the bare copper conductor in a ground ring be buried at a minimum?

1 ft below grade

2 ft below grade

2.5 ft below grade

The bare copper conductor in a ground ring must be buried at a minimum depth of 2.5 feet below grade to ensure proper grounding and to protect the conductor from physical damage, environmental factors, and variations in soil conditions. This depth is typically established based on national electrical codes and safety standards.

Burying the conductor at this depth allows for effective grounding performance by providing a low-resistance path to the earth, which helps dissipate any fault currents safely. Additionally, it reduces the likelihood of interference from surface conditions, such as frost or other disturbances, that could impact the effective grounding of the electrical system.

It is important to follow the specific regulations and codes applicable to the location to ensure compliance and safety in installation practices.

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5 ft below grade

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