A novel pole guard for electric utility poles has at least one notch for allowing a portion of the pole guard to provide insulative coverage below a cross arm of a utility pole. The motor includes a rotor and a stator having at least three phases. is thus secured against unauthorized guidance that could harm passengers or other persons or property. This enlarged void engages an outer pushrod surface as the shield and the pushrod are joined. The protective film comprises a lower protective film made of second insulating material whose etching resistance is different from the first insulating material and an upper protective film made of third insulating film whose etching resistance is different from the second insulating material.