A power distribution unit comprising: an input configured to receive input power; and a housing including: a first outer edge; a second outer edge; a top surface contained between the first outer edge and the second outer edge and having a plurality of power outlets, each of the plurality of power outlets having three output terminals, including a ground terminal, a first terminal, and a second terminal; a plurality of slots formed in the housing, each of the plurality of slots being configured to retain a locking tab of a locking power cord inserted into one of the plurality of power outlets; wherein the plurality of power outlets are arranged in two adjacent columns, including a first column and a second column with at least two power outlets in each of the first column and the second column; wherein the ground terminals of the power outlets in the first column are formed along a third line, and the ground terminals of the power outlets of the second column are formed along a fourth line; characterised in that the plurality of power outlets are arranged such that the first terminals and the second terminals of the power outlets in the first column are formed along a first line, the first terminals and the second terminals of the power outlets in the second column are formed along a second line, the first line, the second line, the third line, and the fourth line are arranged in parallel; and the plurality of power outlets are arranged in an arrangement in which the third and fourth lines are positioned between the first and second lines. an input configured to receive input power; and a housing including: a first outer edge; a second outer edge; a top surface contained between the first outer edge and the second outer edge and having a plurality of power outlets, each of the plurality of power outlets having three output terminals, including a ground terminal, a first terminal, and a second terminal; a plurality of slots formed in the housing, each of the plurality of slots being configured to retain a locking tab of a locking power cord inserted into one of the plurality of power outlets; wherein the plurality of power outlets are arranged in two adjacent columns, including a first column and a second column with at least two power outlets in each of the first column and the second column; wherein the ground terminals of the power outlets in the first column are formed along a third line, and the ground terminals of the power outlets of the second column are formed along a fourth line; characterised in that the plurality of power outlets are arranged such that the first terminals and the second terminals of the power outlets in the first column are formed along a first line, the first terminals and the second terminals of the power outlets in the second column are formed along a second line, the first line, the second line, the third line, and the fourth line are arranged in parallel; and the plurality of power outlets are arranged in an arrangement in which the third and fourth lines are positioned between the first and second lines. a first outer edge; a second outer edge; a top surface contained between the first outer edge and the second outer edge and having a plurality of power outlets, each of the plurality of power outlets having three output terminals, including a ground terminal, a first terminal, and a second terminal; a plurality of slots formed in the housing, each of the plurality of slots being configured to retain a locking tab of a locking power cord inserted into one of the plurality of power outlets; wherein the plurality of power outlets are arranged in two adjacent columns, including a first column and a second column with at least two power outlets in each of the first column and the second column; wherein the ground terminals of the power outlets in the first column are formed along a third line, and the ground terminals of the power outlets of the second column are formed along a fourth line; characterised in that the plurality of power outlets are arranged such that the first terminals and the second terminals of the power outlets in the first column are formed along a first line, the first terminals and the second terminals of the power outlets in the second column are formed along a second line, the first line, the second line, the third line, and the fourth line are arranged in parallel; and the plurality of power outlets are arranged in an arrangement in which the third and fourth lines are positioned between the first and second lines.