A system for dry contact-based automatic alignment of electric vehicle (EV) charging load to whole circuit consumption comprises an electric vehicle supply equipment (EVSE) including a charger relay circuit, a dry contact input and a current transformer (CT) clamp that is installed on an external electrical circuit to be measured against. The CT clamp outputs a signal that can be calibrated to generate an analog signal that passes a minimum threshold of the dry contact input. Normally the inputs at the dry contact input in the EVSE are programmed. A logic behind the external electrical circuit is modified to: a) turn off delivery of power to the EV when a calibrated current on the CT clamp is exceeded b) turn back on power to the EV if the calibrated current is no longer exceeded for over X seconds.

A control device controls a boost converter to be operated in one of a continuous voltage-boosting mode in which the converter is continuously operated and in an intermittent voltage-boosting mode in which the converter is intermittently operated. The control device permits the converter to be controlled in the intermittent voltage-boosting mode when an atmospheric pressure is equal to or greater than a first prescribed value, and inhibits the converter from being controlled in the intermittent voltage-boosting mode when the atmospheric pressure is less than the first prescribed value.