Abstract: A clamping structure, including a base defined by a height, the base including a first end and a second end, wherein the first end and the second end are on opposite sides of one another; a first end wall situated on the first end of the base and a second end wall situated on the second end of the base; and at least one wall partition situated on the base between the first end wall and the second end wall to form the border of a first receiving area with the first end wall; wherein the first receiving area is generally rectangular or generally square in shape and includes two openings on two sides not bordered by either the at least one wall partition or the first end wall.

Abstract: An apparatus and method for electrical transport refrigeration, including generating a direct current (DC) voltage; storing the DC voltage in a high voltage DC storage; sensing a current requirement from an electrical load (e.g., a refrigeration unit), wherein the current requirement is proportional to a power requirement of the electrical load; transporting the DC voltage from the high voltage DC storage to an inverter, wherein the DC voltage is in an amount consistent with the power requirement; converting the DC voltage to an inverted AC voltage: determining a voltage in a voltage path; and triggering a switch to connect the electrical load to the voltage path it the voltage is the inverted AC voltage. And, the apparatus and method may include connecting a battery to an operating control unit of the refrigeration unit to enable a soft start of a compressor. In one example, the apparatus is a tractor-trailer system.

Abstract: An apparatus and method for connecting electrical units including determining that a first electrical connection is mated with a first electrical receptacle at a first point of connection; determining that a second electrical connection is mated with a second electrical receptacle at a second point of connection, wherein the first second point of connection and the second point of connection are at opposite ends of an electrical cable; initiating delivery of voltage through the electrical cable; monitoring the voltage level of a source that outputs the delivery of the voltage; and comparing the voltage level of the source with a predetermined value to generate a comparison value.