1.1 This test method covers determination of the thermal endurance of film-insulated round magnet wire in air at atmospheric pressure. It is not applicable to magnet wire with fibrous insulation, such as cotton or glass. Note 1—Other solid conductors such as coated resistance wire may be evaluated by this test method.1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units in parentheses are provided for information only.1.3 Thi