A power supply comprising: an input configured to receive input AC power; an output configured to provide output AC power to a load; at least one power converter coupled to the input and configured to convert the input AC power into the output AC power; and a controller coupled the at least one power converter, the controller being configured to: adjust at least one parameter of the output AC power provided by the at least one power converter, wherein adjusting the at least one parameter of the output AC power includes adding a high frequency component to the output AC power, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power, wherein determining that the fault has occurred based on the adjusted output AC power includes determining that the fault has occurred in response to a detection of the high frequency component in the adjusted input AC power, and providing one or more notifications indicative of the fault responsive to determining that the fault has occurred. an input configured to receive input AC power; an output configured to provide output AC power to a load; at least one power converter coupled to the input and configured to convert the input AC power into the output AC power; and a controller coupled the at least one power converter, the controller being configured to: adjust at least one parameter of the output AC power provided by the at least one power converter, wherein adjusting the at least one parameter of the output AC power includes adding a high frequency component to the output AC power, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power, wherein determining that the fault has occurred based on the adjusted output AC power includes determining that the fault has occurred in response to a detection of the high frequency component in the adjusted input AC power, and providing one or more notifications indicative of the fault responsive to determining that the fault has occurred. adjust at least one parameter of the output AC power provided by the at least one power converter, wherein adjusting the at least one parameter of the output AC power includes adding a high frequency component to the output AC power, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power, wherein determining that the fault has occurred based on the adjusted output AC power includes determining that the fault has occurred in response to a detection of the high frequency component in the adjusted input AC power, and providing one or more notifications indicative of the fault responsive to determining that the fault has occurred. <EOS>