Double Lugging Exception

In some cases, double lugging may be permitted, even if the breaker is not specifically designed for it. Such situations include: Using a thicker lug or wire than the breaker's lugs are rated for, but not exceeding the wire gauge or overcurrent protection rating of the breaker. Using a loadside auxiliary contact kit that is designed to fit the breaker's lugs. Installing a surge protection device (SPD) that is specifically designed for use with a non-double lugging breaker.

Passive Parallel SPDs

A passive parallel SPD can be installed on a non-double lugging breaker as long as it meets the following conditions: The SPD is installed on the load side of the breaker. The SPD is designed for the voltage rating of the circuit. The SPD has a current rating that is equal to or greater than the trip rating of the breaker. The SPD is designed to be electrically isolated from the circuit, such as by using a plastic enclosure or a fiber optic cable.

Additional Considerations: It is important to consult the breaker manufacturer's instructions and specifications to ensure that the proposed installation is permitted. Double lugging or installing an SPD on a non-double lugging breaker without proper precautions can create a safety hazard, including the risk of overheating, arcing, and fire. It is always advisable to use breakers that are specifically designed for double lugging or SPD installation, as these breakers have been tested and certified for such use. Flag for review