Is it true that the grounded conductor of each separately derived system must be bonded to the nearest available point of the metal water piping system(s)?

The assertion that the grounded conductor of each separately derived system must be bonded to the nearest available point of the metal water piping system is true. This requirement is based on the need to provide a low-resistance path to ground in order to ensure safety and proper functioning of the electrical system.

Bonding the grounded conductor to the metal water piping enhances the effectiveness of the grounding system, which helps to mitigate the risks associated with electrical faults. This connection ensures that any electrical faults can facilitate a safe path for fault current to the ground, thus triggering overcurrent protection devices like circuit breakers or fuses to operate effectively.

In both residential and commercial settings, this bonding requirement helps prevent potential differences between the grounding system and the water piping, which could create shock hazards. The National Electrical Code (NEC) establishes these standards irrespective of whether the installation is situated in residential or commercial buildings; thus, the obligation to bond grounded conductors exists across all system types.

Understanding this concept is essential for ensuring compliance with electrical safety standards and protecting individuals and property from electrical hazards.