Quiz on the Code - NEC Tables
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1. When using Chapter 9, Table 8, the resistance per 1000 ft is based on dc resistance at ______.
(a) 60°C
(b) 75°C
(c) 90°C
(d) 50°C
2. When using other than a one shot or full shoe bender, the radius of a bend on 2” EMT must not be smaller than ______ inches.
(a) 10
(b) 9½
(c) 9
(d) 12
3. When calculating the maximum number of conductors or cables permitted in a conduit or tubing, all of the same size (total cross-sectional area including insulation), the next higher whole number shall be used to determine the maximum number of conductors permitted when the calculation results in a decimal greater than or equal to ______.
(a) 0.7
(b) 0.8
(c) 0.5
(d) 0.045
4. What is the correct name of Table 1 Chapter 9?
(a) Percent of Cross Section of Conduit and Tubing for Conductors and Cables
(b) Percent of Cross Section of Conduit and Tubing for Conductors
(c) Percent of Cross Section of Conduit and Tubing
(d) Percent of Cross Section of Conduit for Conductors and Cables
5. When comparing conductor properties, which statement is true?
(a) direct current resistance in a coated copper conductor is greater than an uncoated copper cond.
(b) direct current resistance in an uncoated copper conductor is greater than a coated copper cond.
(c) aluminum conductors one size larger has about the same resistance /kFT copper
(d) a copper #12 AWG stranded conductor has the same resistance /kFT as a solid #12 AWG.
Key
1. (b) Table 8
2. (d) Table 2
3. (b) Table 1 Note 7
4. (a) Table 1
5. (a) Table 8
