What cable size is recommended for ASTM Grade 3 personal protective grounds?

The recommended cable size for ASTM Grade 3 personal protective grounds is 2/0. This is based on industry standards which dictate that specific grades of personal protective grounding must utilize conductors of sufficient size to ensure safety and minimize voltage drop when grounding equipment.

When using 2/0 cable, it possesses adequate conductivity and strength to provide a low-resistance path for fault currents, which is essential during electrical faults. The larger conductor size allows for effective dissipation of energy to the ground and helps to prevent heating and potential fire hazards that could occur if the grounding system is inadequate. Additionally, 2/0 cable is typically rated for high current applications, aligning perfectly with the requirements established for personal protective grounding systems, ensuring the protection of personnel working in hazardous electrical environments.

The other options, while they may meet some specifications for other applications, does not meet the standards necessary for ASTM Grade 3 personal protective grounds, where the greater size of the 2/0 conductor is crucial for optimal performance and safety.