Conductor Material and Sizes - Section 4 Questions & Answers

The current carrying capacity of a conductor is referred to as the ampacity of that conductor. True or false? - ANSWERSTrue. Section 0 Other then used for luminaire wiring, equipment wire shall not be smaller than: - ANSWERS26 AWG 300V Except for flexible cord, equipment wire, control circuit wire, and cable, conductors shall not be smaller than #14 AWG copper or #12 AWG aluminum. True or false? - ANSWERSTrue. Rule 4-002 Equipment wire shall be of a type specified for each specific condition of use in: - ANSWERSTable 11. When counting the number of conductors in a raceway to determine the correlation factor, you must count the neutral conductors. True or false? - ANSWERSFalse. Rule 4-004(3) When conductors are installed in, or are passing through an area in which the temperature exceeds 30°C, the conductors shall be further derated according to table 6. True or false? - ANSWERSFalse. Rule 4-004(8) Three #2 AWG RW90 copper conductors terminated in a circuit breaker rated 75°C are installed in a conduit which passes through a room in which the ambient temperature is 70°C. The maximum allowable ampacity of these conductors is: - ANSWERS66.7 A According to the CEC, #12 R90 copper terminated in a 75° rated circuit breaker, the rating of the overcurrent protection shall not exceed: - ANSWERS20 A. What is the minimum AWG and breaker permitted required for R90 copper conductors in a raceway with six current carrying conductors feeding 60 amp non-continuous loads from a circuit breaker with 75° rated terminals? - ANSWERS#12 and a 20 A breaker. An insulated #12 AWG copper wire can be used as a neutral conductor for a service. True or false? - ANSWERSFalse. Rule 4-024 A conductor that is colored black is called an identified conductor according to the CEC. True or false? - ANSWERSFalse. Section 0 The neutral conductor shall have sufficient ampacity to carry: - ANSWERSthe unbalanced load. The maximum size for an identified neutral conductor that must be identified along its entire length is: - ANSWERS#2 AWG White insulated conductor at a receptacle, fed from a single phase 2 wire system, should be called: - ANSWERSthe identified conductor. The use of identified conductors in a multi wire branch circuit requires that a neutral conductor be made continuous by pigtailing the neutral conductors, where more than one of them must be connected to a device. True or false? - ANSWERSTrue. Rule 4-028 For a 1 phase ac or dc circuit, the conductor color coding ___ shall be used where and identified conductor is not required. - ANSWERS1 black, 1 red When armor cable, aluminum sheath cable or nonmetallic sheath cable is used, and every point where the separate conductors have been rendered accessible and visible by removal of the outer covering of the cable and identified conductor forms no part of the circuit. The identified conductors shall: - ANSWERSbe cut off short to show it forms no part of the circuit. A green colored conductor may be used as a: - ANSWERSbonding conductor. The term neutral and identified conductor mean one and the same. True or false? - ANSWERSFalse. Section 0 Appendix B A flexible cord smaller than #14 AWG may be used if the current is less then 15 A. True or false? - ANSWERSTrue. 4-014 To determine whether a certain type of conductor, other than flexible cord,is suitable for a particular condition of use, we refer to table: - ANSWERS19. The smallest conductor used for branch circuit wiring using aluminum shall be: - ANSWERS#12 AWG. The current carrying capacity that applies to four, five, or six conductors in a run of raceway or cable is: - ANSWERS80%.