To obtain a power feed system for a mobile unit which can realize the cost reduction and the improvement of a power feeding efficiency.

Feeder lines 7a and 7b are put through the inside of a core 9 without being brought into contact with the core 9, a ferromagnetic element 10, and a coil 12; neither a holding member 6 is brought into contact with the core 9, the ferromagnetic element 10, or the coil 12. The feeder line 7a is placed in a space between the top protrusion and center protrusion of the core 9 and the feeder line 7b is placed in a space between the center protrusion and the bottom protrusion of the core 9. An attachment member 8 is fixed to a main part of a carrier 4 with screws, etc.