Abstract: Aspects of the present disclosure involve a light emitting diode (LED) meter board for a transfer switch configured to indicate the power currently being output by the transfer switch to any engaged circuits. In one particular embodiment, the LED meter board indicates a percentage of available power provided to the circuits by a generator or other alternative power source. As more power is output to the circuits, the LED meter board drives the activation of one or more LEDs. Further, the LEDs of the meter board may indicate the power currently being output by the transfer switch to any engaged circuits by blinking at various rates. The blinking rate of the LEDs may increase until one or more of the LEDs may remain solidly lit, or otherwise activated, indicating the percentage of power provided by the generator has reached a particular threshold value.

Abstract: Aspects of the present disclosure involve systems, methods, and the like, for an automatic transfer switch (ATS) of a power system. The ATS allows for switching between two or more power systems while preventing back-feeding of the power systems. To provide the safety features of the ATS, a safety circuit and control board may be implemented with the magnetic latching relays to control the actions of the latching relays and provide the switching function of the ATS. In one particular embodiment, the safety board comprises one or more electromechanical relays positioned between the controlling electronics of the control board and the magnetic latching relays. The safety board design contains measures to ensure it still functions if one of the disconnect switches is not connected, if one of the connections to a first load phase, a second load phase or neutral is lost and if the main control board is not connected.