How it works
Automatically manages the transition between the electric utility service and generator as follows: Continuously monitors the connection to local utility power. When utility power is disrupted, the transfer switch confirms that a true power outage has occured and signals the standby generator to start. The system supplies backup power to the home within 30 seconds.
Air Condition Control Module (ACCM)
Some switches contain an ACCM (Air Condition Control Module), a patented Power Management technology that supervises the power demands of up to two central air-conditioners while safeguarding against power overload.
Service Disconnect Option
Some Transfer Switches are suitable for use as the Service Entrance Disconnect; these switches may be optionally connected directly after the home’s utility watt-hour meter, instead of being connected downstream of the main panelboard.
Current Capacity Rating Options
Automatic Transfer Switches come in four sizes: 50A, 100A, 200A, and 400A; if the Transfer Switch will also serve as the Service Disconnect, it will need to have a current capacity at least as great as the main breaker on the main panelboard. (Note; 200A main breakers are common in many new homes, while older homes often have 100A)
Some switches include a panelboard within the transfer switch enclosure; in cases where the Transfer Switch will not be used as the Service Disconnect, you may want to consider the option of choosing Transfer Switch that includes a panelboard, since this will eliminate the need to purchase a separate subpanel.
All transfer switches include a rainproof NEMA 3R outdoor enclosure.