What is bonding in electrical terms?

In electrical terms, bonding refers specifically to the permanent joining of metallic parts to create a conductive path for electricity. This process is crucial for safety and functionality in electrical systems. By bonding metallic components together, electrical systems ensure that any stray electrical currents have a low-resistance path to ground, which helps prevent electrical shock, fires, and damage to equipment.

When we consider the definitions of the other options, they involve processes related to electrical work but do not accurately describe bonding. Coating wires with insulation is related to protecting them from environmental factors and preventing short circuits. The temporary connection of metallic parts for testing is a different concept known as "jumping" or "temporary wiring," where the focus is on testing rather than creating a permanent connection. Sealing electrical junctions involves protecting connections from moisture and debris but does not address the electrical conductivity aspect that bonding entails. Thus, the definition of bonding as the permanent joining of metallic parts is essential for maintaining the integrity and safety of electrical installations.