Appliance connections to a chimney or vent equipped with a power exhauster shall be made on the __________ side of the exhauster.

The correct choice is the inlet side of the power exhauster. This requirement is fundamentally linked to the proper functioning and safety of the venting system for appliances. When connections are made on the inlet side, it ensures that the exhaust gases from the appliance are effectively drawn into the exhauster, promoting efficient venting and preventing backdrafts that could lead to hazardous situations.

This configuration allows the power exhauster to actively pull the combustion byproducts from the appliance and push them through the ventilation system. By connecting on the inlet side, the power exhauster operates in a way that enhances airflow and minimizes the risk of exhaust gases leaking back into living spaces, which could potentially lead to dangerous conditions such as carbon monoxide buildup.

Positioning connections on the outlet or exhaust side would disrupt the intended flow of gases, which is why those options are not viable. Adequate venting is crucial in maintaining indoor air quality and ensuring that appliances operate safely and efficiently.