IEC Lesson 109 HW UPDATED Exam Questions and CORRECT Answers
How is wire diameter expressed in the AWG standard? - ANS as a whole number Wire sizes up through 4/0 are expressed in American Wire Gauge (AWG). Wire sizes larger than 4/0 AWG are expressed in ___. - ANS kcmil One mil = ___ inches. - ANS .001 Particular care has to be taken when making aluminum wiring connections because when aluminum is exposed to air it oxidizes, forming a ___ surface coating that prevents good connections. Aluminum conductors must have the oxide removed and an inhibitor compound applied to joints to ensure an electrically sound connection. - ANS non-conductive
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