An electric motor stator has a stator core and a plurality of windings wound around teeth of the stator core. Also disclosed herein is a poly copolymer comprising incorporated urea compound and dihydroxy compound residues. Comer pieces may include multiple slots along each side, allowing for multiple layers of panel members along each side, thereby increasing strength and allowing an insulative and structural fill material to be added between panel member layers. The value of the capacitively sensed signal is indicative of the presence or non-presence of an open defect on one or both of the grounded node and stimulated signal node. Thus, according to the present invention, the time required for evaluating the electric characteristics can be substantially curtailed, and the term and expenses of manufacturing a semiconductor device can be curtailed. The methods comprise selecting at least one array design parameter by an array customer, transferring or providing the selected array parameter to an array vendor, determining, by the vendor, one or more additional array design parameters, and completing an array design or designs according to the customer selected array parameter and vendor provided array parameter.