Table IV - Minimum material requirements for service A motors (cont'd.).
Unless otherwise indicated in table IV, steel parts may be cast, fabricated, wrought, or forged, Cast
steel shall be in accordance with class B of Specification MIL-S-15083, or equivalent, except that
radiographic and magnetic particle inspection will not be required.
For Bureau of Ordnance contracts or equipment, specific approval from the Bureau of Ordnance shall be
obtained prior to use of these materials.
Alternate wire sizes - Types C, C2, R2, R4, AV, GV and G2V of Specification JAN-W-583 and
types GH and G2H of Specification MIL-W-16072 of sizes other than those in table IV may be
used provided the design is such as to permit rewinding with a type and size listed in table IV
and having an equivalent or higher temperature rating.
188.8.131.52.3 All instulated electrical windings shall receive at least one of the required impregnations
before assembly on machine parts except that impregnation before assembly on machine parts will not be
required for windings which are to be inserted in semienclosed slots or other windings where the method
of installation is such as to make this preliminary impregnation impractical. In such cases, all required
impregnations shall be made after the windings are installed on the machine parts.