Which of the following describes the MOST redundant power solution?

The most redundant power solution is achieved by having two power supplies hooked to separate 1-phase circuits. This configuration allows for greater fault tolerance; if one power supply or one of the 1-phase circuits fails, the other power supply connected to the separate circuit can continue to provide power to the system. This setup ensures continuous operation, as it minimizes the risk of a single point of failure affecting power availability.

In contrast, connecting two power supplies to the same 1-phase circuit offers no redundancy. If that circuit experiences an issue, both power supplies would lose power. While hooking two power supplies to individual legs of one 3-phase circuit can provide some level of redundancy, it may not be optimal because issues with the 3-phase system could affect both legs. Having one power supply connected to two 1-phase circuits, while seemingly providing redundancy, does not match the effectiveness of two separate power supplies, as it introduces reliance on one power supply component. Redundancy is best realized through separation of power sources, which is fundamentally what option C represents.