Based on the 2020 NEC. The grounding electrode provides the essential function of connecting the electrical system and electrical equipment to the earth. In some cases, the grounding electrode(s) ...

Explanation: As stated in Sec. 250.53(A)(3), "If multiple rod, pipe, or plate electrodes are installed to meet the requirements of this section, they shall not be less than 6 ft apart." Lupacchino is ...

These rules aren't suggestions. They're life-saving requirements that protect workers during construction and everyone who uses the building later.

Local codes or specific client requirements could dictate which way they go, too. Early patents for grounding-type receptacles show the grounding prong on top, so there’s that, too.