Where should cable limiters and other current limiting devices be connected?

The correct placement of cable limiters and other current limiting devices is on the load side of a service disconnect. This configuration ensures that these devices are able to protect the load from excessive current that could cause overheating, equipment damage, or failure. By being located on the load side, these devices can effectively monitor and limit the current that flows to the connected equipment, thereby enhancing the overall safety and reliability of the electrical system.

In this arrangement, if there is an overcurrent condition, the limiter will react to this excess current and limit it before it can reach and potentially harm the downstream equipment. This is crucial in preventing hazards such as electrical fires or equipment malfunctions.

The other placement options, such as on the supply side or before the service disconnect, would not allow the limiter to provide the intended protection for the load. These configurations either fail to monitor the current as it pertains to the specific equipment or compromise the effectiveness of the limiters. Therefore, connecting them on the load side ensures they serve their purpose most effectively.