When more than one terminal is to be installed, which terminal is placed next to the corrosion protective washer and surface material?

The correct choice is the largest terminal, which is placed next to the corrosion protective washer and surface material primarily due to the need for effective load distribution and electrical connectivity. In an assembly where multiple terminals are utilized, placing the largest terminal next to the corrosion protective washer enhances the mechanical integrity and minimizes the risk of creating uneven stresses on the surface material.

Larger terminals typically have greater surface area, which facilitates improved conductivity and reduces resistance in the connection. Moreover, positioning them in a manner that ensures they are secured against the washer helps to prevent corrosion-related issues, as the washer's purpose is to isolate and protect the underlying surface from environmental factors that could lead to degradation.

This configuration also allows for a more organized and efficient assembly process, providing room for the smaller terminals to be secured without interfering with the larger connectivities or compromising the protection provided by the washer.