Bonding non-current carrying metal parts of equipment minimizes differences of which parameter?

Bonding non-current carrying metal parts of equipment is primarily aimed at minimizing differences in potential (voltage) between these parts. When equipment is bonded, it creates a low-resistance path, ensuring that any voltage differences that might arise due to electrical faults or other issues are equalized. This is critical for safety; if different metal parts are at varying potentials, it could lead to hazardous situations, such as electric shock or arcing, particularly when a person inadvertently touches one part while grounded.

In electrical systems, maintaining the same potential among non-current carrying parts helps prevent dangerous voltage buildup. It ensures that if a fault occurs, there is a minimal voltage difference that could result in a harmful situation. Thus, bonding is an essential safety measure to protect users and prevent damage to equipment by ensuring that all metal parts are at the same electrical potential.