In a wye-wye connection, what is required for both the high and low side?

In a wye-wye connection, it is essential to have a solid connection to earth ground for both the high side and low side. This grounding provides a reference point for the electrical system, helping to stabilize the voltage levels and protect against electrical faults. Proper grounding reduces the risk of electrical shock and improves the system's overall safety and reliability.

Moreover, a solid connection to ground allows for effective operation of overcurrent devices and helps to ensure that fault currents have a safe path to ground, which is crucial for both worker safety and equipment protection. Grounding also minimizes the effects of transients and helps mitigate electromagnetic interference, which can be important in maintaining the quality of power delivery.

In contrast, while floating connections and insulation from ground have their uses in specific circumstances, they do not provide the same level of protection and stability that a solid earth ground connection does in a wye-wye configuration. Grounding electrodes are part of the grounding system but do not imply a direct requirement for the wye-wye connections themselves to function properly.