The ground ring shall be buried at a depth below the earth’s surface of not less than _____:

The electrode shall be installed such that at least _____ of length is in contact with the soil.

A single rod, pipe, or plate electrode shall not be supplemented by an additional electrode:

Which of the following systems or materials shall not be used as grounding electrodes:

Each plate electrode permitted for grounding shall expose not less than ___ of surface to exterior soil:

If a single rod, pipe, or plate grounding electrode has a resistance to earth of ___ or less, the supplemental electrode shall not be required.

If practicable, rod, pipe, and plate electrodes shall be embedded above permanent moisture level.

In case of multiple auxiliary rod, pipe, or plate electrodes are installed for providing grounding system, they shall not be less than ___ apart:

Where the supplemental electrode is a rod, pipe, or plate electrode, that portion of the bonding jumper that is the sole connection to the supplemental grounding electrode shall not be required to be larger than ___ copper wire.

A concrete-encased electrode shall consist of at least ____ of Bare Copper Conductor not smaller than 4 AWG:

Continuity of the grounding path or the bonding connection to interior piping can rely on water meters or filtering devices:

The supplemental electrode shall be bonded to one of the following: (Multiple Answer Question):