Where are lightning surge arrestors recommended to be installed on a step regulator?

Installing lightning surge arrestors on both the source and load sides of a step regulator is important for ensuring maximum protection against voltage surges caused by lightning strikes. By placing surge arrestors on the source side, any surges generated upstream are intercepted before they can affect the regulator and downstream equipment. Conversely, having additional protection on the load side safeguards against residual surges that might still enter the system after passing through the regulator, as well as any surges generated within the load itself.

This dual installation approach enhances the resilience of the electrical system, helping to prevent damage to sensitive equipment, maintain system reliability, and reduce downtime due to electrical interference. In scenarios where only one side is protected, there remains an increased risk, as surges can still enter from the unprotected side, potentially causing harm to the equipment connected to the step regulator. Therefore, the comprehensive protection provided by installing surge arrestors on both sides is crucial for safeguarding against electrical surges, particularly in outdoor or exposed installations where lightning activity is a legitimate concern.