Electrical power may be delivered to nodes in a network with a phase that is selected from a plurality of phases. According to various embodiments, the phase with which electrical power may be delivered to a particular node may be determined by varying, or identifying a variation in, the voltage of the electrical power that is delivered to a subset of nodes that is associated with a known phase. A variation in a voltage of the electrical power that is received by the particular node may also be identified. The phase with which the particular node is associated may be determined by correlating the identified voltage variation in the electrical power delivered to the subset of nodes that is associated with the known phase with the identified voltage variation in the electrical power received by the particular node.