How often should a transfer switch be inspected for functionality?

The recommendation to inspect a transfer switch once per month is based on the need to ensure operational reliability, particularly in critical applications where power continuity is essential, such as in hospitals or data centers. Regular monthly inspections help identify any wear, mechanical issues, or electrical faults that could hinder the switch's performance during a power outage.

This frequency allows technicians to verify that the switch operates correctly and is ready to transfer loads from the utility source to a backup generator without delay. Monthly checks often include testing the switch under load conditions, examining electrical connections, and confirming that all mechanical parts are functioning smoothly. By maintaining this schedule, you can minimize the risk of unexpected failures when the system is needed most.

While other options suggest varying frequencies, more extended intervals could increase the risk of undetected issues that might arise, leading to potentially serious consequences during actual transfer events.