An adapter for testing electrical equipment (103, 105), the adapter comprising: a first receptacle end comprising at least one first connector, wherein the at least one first connector is configured to couple to a power source connector of a first high voltage electrical device, wherein the first receptacle end is configured to send at least one first test signal to the first high voltage electrical device, wherein the at least one first test signal is configured to test a first electrical integrity of the first high voltage electrical device; a second receptacle end comprising at least one second connector, wherein the at least one second connector is configured to couple to an electrical device connector of a power source, wherein the power source connector of the first high voltage electrical device and the electrical device connector of the power source are pre-configured to directly couple to each other in an absence of the adapter, and wherein the power source is configured to provide primary power to the first high voltage electrical device during normal operating conditions; and a sensing device configured to receive at least one first response signal from the first high voltage electrical device, wherein the at least one first response signal is in response to and based on the first high voltage electrical device receiving the at least one first test signal, wherein the at least one first response signal comprises information about the electrical integrity of the first high voltage electrical device, wherein the at least one first response signal provides an indication of a phase-to-phase fault or a phase-to-ground fault. a first receptacle end comprising at least one first connector, wherein the at least one first connector is configured to couple to a power source connector of a first high voltage electrical device, wherein the first receptacle end is configured to send at least one first test signal to the first high voltage electrical device, wherein the at least one first test signal is configured to test a first electrical integrity of the first high voltage electrical device; a second receptacle end comprising at least one second connector, wherein the at least one second connector is configured to couple to an electrical device connector of a power source, wherein the power source connector of the first high voltage electrical device and the electrical device connector of the power source are pre-configured to directly couple to each other in an absence of the adapter, and wherein the power source is configured to provide primary power to the first high voltage electrical device during normal operating conditions; and a sensing device configured to receive at least one first response signal from the first high voltage electrical device, wherein the at least one first response signal is in response to and based on the first high voltage electrical device receiving the at least one first test signal, wherein the at least one first response signal comprises information about the electrical integrity of the first high voltage electrical device, wherein the at least one first response signal provides an indication of a phase-to-phase fault or a phase-to-ground fault.