What must be done to the grounding conductors of onboard power sources that may operate in parallel?

The grounding conductors of onboard power sources that may operate in parallel must be grounded to ensure the safety and reliability of the electrical system. Grounding provides a reference point for voltage stability and a safe path for fault currents, which helps prevent electrocution, minimizes equipment damage, and enhances the overall safety of the electrical system.

When power sources operate in parallel, it is essential to connect their ground systems to a common ground point. This common grounding helps prevent ground loops, ensures that all equipment operates at the same electrical potential, and reduces the risk of stray voltages that could lead to equipment malfunction or safety hazards. Proper grounding is especially critical in marine environments due to the presence of water, which can create additional risks.

Insulated grounding conductors would not provide the necessary safety function; disconnected grounding conductors could lead to dangerous conditions if there is a fault; and while protection of conductors is important, it does not address the fundamental need for grounding in the context of parallel operation of power sources. Therefore, grounding is essential for maintaining safe and effective operation in these circumstances.