A system for supplying power to a load over a communication link including a first wire set composed of two pairs of conductors (16, 18), and a second wire set composed of other two pairs of conductors (20, 22), the system comprising: a first classification engine for probing the load over the first wire set (16, 18) to determine a first response of the load, and a second classification engine for probing the load over the second wire set to determine a second response of the load, wherein the first classification engine is configured for supplying the load with at least one first classification signal over the first wire set (16, 18) to determine at least one first response signal from the load, and the second classification engine is configured for supplying the load with at least one second classification signal over the second wire set (20, 22) to determine at least one second response signal from the load, and wherein the system further comprises a first power control mechanism for controlling power delivery over the first wire set (16, 18), and a second power control mechanism for controlling power delivery over the second wire set (20, 22), wherein - the first power control mechanism is configured to deliver power over the first wire set (16, 18) based on a response of the load determined by the first classification engine over the first wire set (16, 18), and the second power control mechanism is configured to deliver power over the second wire set (20, 22) based on a response of the load determined by the second classification engine over the second wire set (20, 22), or - the first power control mechanism is configured to deliver power over the first wire set (16, 18) based on a response of the load determined by the second classification engine over the second wire set (20, 22), and the second power control mechanism is configured to deliver power over the second wire set (20, 22) based on a response of the load determined by the first classification engine over the first wire set (16, 18), or - the first and second power control mechanisms (126,128) are configured to deliver power over the first and second wire sets based on a response of either the first or the second classification engine (122, 124) or a combination of both the first and the second classification engines (122, 124) over either the first or the second wire set or a combination of the first and second wire sets. - the first power control mechanism is configured to deliver power over the first wire set (16, 18) based on a response of the load determined by the first classification engine over the first wire set (16, 18), and the second power control mechanism is configured to deliver power over the second wire set (20, 22) based on a response of the load determined by the second classification engine over the second wire set (20, 22), or - the first power control mechanism is configured to deliver power over the first wire set (16, 18) based on a response of the load determined by the second classification engine over the second wire set (20, 22), and the second power control mechanism is configured to deliver power over the second wire set (20, 22) based on a response of the load determined by the first classification engine over the first wire set (16, 18), or - the first and second power control mechanisms (126,128) are configured to deliver power over the first and second wire sets based on a response of either the first or the second classification engine (122, 124) or a combination of both the first and the second classification engines (122, 124) over either the first or the second wire set or a combination of the first and second wire sets.