or rotor coil windings 630 a width of protrusions 820 822 is preferably less than a space between coil end straps 632 adjacent alternate coil to coil connectors 634 in some embodiments to prevent or reduce movement of main lead 628 in non axial directions one or more attaching devices such as those shown in fig6 and 7 may be used to secure channel 810 to coil to coil connectors 634 other protrusions 830 832 extend downward i e toward rotor body 610 from channel 610 to reside along or adjacent rotor body 610 thereby restricting movement of support channel 900 and main lead 628 toward rotor body 610 support channel 900 including channel 810 and protrusions 820 822 830 832 are non metallic and may include any number of non metallic materials suitable materials include for example glasses and ceramics in some embodiments support channel 900 is comprised primarily or exclusively of an epoxy glass fig9 shows a cross sectional view of support channel 900 protrusion 822 extends upward i e away from rotor body 610 fig8 and protrusion 832 extends downward i e toward rotor body 610 from channel 810 main lead 628 resides within channel 810 and above protrusion 832 the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure as used herein the singular forms u201c a u201d u201c an u201d and u201c the u201d are intended to include the plural forms as well unless the context clearly indicates otherwise it will be further understood that the terms u201c comprises u201d and or u201c comprising u201d when used in this.