Abstract: A current measurement and voltage measurement transducer for power measurements has an upper split core attached to an upper housing and a lower split core attached to a lower housing. The upper housing and lower housing have a common hinge surface and engaging surfaces for maintaining closure and providing a magnetic circuit which surrounds a conductor placed inside the transducer, and the magnetic circuit is coupled to windings around the split core, thereby providing a measurement of current. The housings also provide one or more piercing pins which penetrate the insulation of the conductor and provide a voltage measurement.