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Self-Test 1 Q&A 4-1

Self-Test Questions Volume 1

Define wire A thin rod of hard or soft drawn metal. In electrical work, this metal is one that conducts easily, such as copper or aluminum
Define conductor A bare or insulated wire or group of wires not insulated from each other and that is suitable for carrying an electrical current
What is the difference between a solid and a stranded conductor A solid conductor is a single wire; a stranded conductor is a group of single wires twisted together to form a single conductor
Of the materials used for conductors today, which is the best Copper
What is the size range of the American wire gauge (AWG)? No. 40, the smallest, to No. 4/0, the largest
Which is the larger conductor, a No. 2 AWG or a No. 20 AWG? No. 2 AWG
How are conductors larger than No. 4/0 AWG sized and numbered? They are sized according to cross-sectional area and numbered according to thousand circular mils
Why are larger conductors stranded? For flexibility
What do the following letters mean when used for marking insulation types? TA; RH; THW; TA-thermoplastic and asbestos; RH-heat-resistant rubber; THW-moisture and heat-resistant thermoplastic
Why do conductors in conduit or cable have smaller amperage ratings than the same conductors run in free air? Conductors in free air can get rid of heat caused by current flow much faster than if they were in conduit or cable.
Created by: RenegadeWolf