What is an alternate method if it is impractical to install a complete grounding set at the worksite?

The choice of placing a 3-phase grounding set on either side of the worksite is a practical solution when installing a complete grounding system is not feasible. This method effectively enhances safety by creating a low-resistance path to ground for electrical faults, which is essential in preventing equipment damage and ensuring personnel safety. By distributing grounding across multiple points, it reduces the risk of potentially dangerous step and touch voltages that can occur if there is a fault in the system.

This method takes advantage of the three-phase system's balance, ensuring that if a fault occurs on any one phase, the grounding can help mitigate the immediate risks presented by that fault. Additionally, having grounding sets on both sides promotes more stable grounding conditions, accommodating various electrical configurations that may affect ground potential rise.

In comparison, utilizing a temporary grounding mat, while somewhat effective, may not provide the same level of protection as a distributed method like the 3-phase grounding set. A single grounding rod may not provide adequate grounding under certain conditions, especially in high fault current scenarios. Increasing distance in grounding procedures does not directly address grounding needs and may lead to safety risks if not evaluated correctly.