temperature rating that a conductor must have and still have69 Ambient Tempere4.The ampacity of 15 current-carrying 10 RHW aluminum conduc-tors in a raceway in an ambient temperature of 75'F is1.gon factor for conductor ampacity in this location is(a) 12A(b) 15A(c) 22A(d) 30A0.71b0.820.880.965.Ain)uous load if the ambient temperature is 75°F and there are nineTHHN conductor is required for a 19.70A noncontin-ne ambient temperature is 71"C, the minimum insulationcurrent-carrying conductors in the raceway in a dry location.he capacity to carry current is(a) 14(b) 12(c) 10A 60°CAI 90°C105°C(d) 80 120°C6.6.11 Ampacity Adjustment [310.15(B)(3)(a)]The ampacity for each of nine current-carrying 10 THW conduc-tors installed in a 20 in. long raceway is1 The ampacity of six current-carrying 4/0 XHHW aluminum con-ductors installed in a ground floor slab (wet location) is(a) 25A(b) 30A(c) 35A(d) 40Aa) 135A0) 144A(e) 185A4 210A

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A2 TW conducttor is installed in a location where the ambient mperature is expected to be 102"F. The temperature correc- on factor for conductor ampacity in this location is 0.71 082 0.88 0.96 I the ambient temperature is 71°C, the minimum insulation 2. mperature rating that a conductor must have and still have he capacity to carry current is A60°C A 90°C 105°C 120°C 11 Ampacity Adjustment [310.15(B)(3)(a)] The ampacity of six current-carrying 4/0 XHHW aluminum con- ductors installed in a ground floor slab (wet location) is a) 135A 0) 144A ) 185A 4 210A

A2 TW conducttor is installed in a location where the ambient mperature is expected to be 102"F. The temperature correc- on factor for conductor ampacity in this location is 0.71 082 0.88 0.96 I the ambient temperature is 71°C, the minimum insulation 2. mperature rating that a conductor must have and still have he capacity to carry current is A60°C A 90°C 105°C 120°C 11 Ampacity Adjustment [310.15(B)(3)(a)] The ampacity of six current-carrying 4/0 XHHW aluminum con- ductors installed in a ground floor slab (wet location) is a) 135A 0) 144A ) 185A 4 210A

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21MCQ

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