12/14/2021 1:26:07 PM Module: 030405o Version: 21 Page: 44 Comment: Objective Five Exercise Answers: Question 1 needs to be changed to FT6. The FT4 rating is based on the 2015, 23rd Edition of the CEC. See Rule 2-130, Appendix B of the 2018 or 2021 CEC. Status: Implemented
12/10/2021 10:12:10 AM Module: 030404g Version: 21 Page: 35 Comment: The reference to (Rule 10-702) in the first diagram is incorrect and needs to be changed to (Rule10-104). Rule 10-702 deals with equipotential bonding and the diagram is referring to the interconnecting conductor between grounding electrodes which is covered within Rule 10-104. Status: Implemented
12/10/2021 10:04:32 AM Module: 030404f Version: 21 Page: 9 Comment: There are three references to the 2015 CEC. My suggestion is to reference the CEC and omit the year or it will have to be changed every 3 years. Status: Implemented
12/10/2021 9:21:38 AM Module: 030405n Version: 22 Page: 19 Comment: There is just a typo: word is "corona" NOT "coronal". Status: Implemented
12/8/2021 12:42:10 PM Module: 030405l Version: 22 Page: 36 Comment: Objective Four Exercise: Question 5. Wet wells shall be classified as what location? For Zone 2 to be the correct answer, the wet well would have to be provided with adequate continuous positive pressure ventilation. The Rule 22-704 is correct. Sewer gas(hydrogen sulphide- H2S) is not only poisonous but also corrosive and flammable; thus without adequate continuous positive pressure ventilation a wet well could be classified as a Zone 1 or Zone 0 location depending on gas concentrations and how often they are present. Status: Implemented
2/8/2021 1:04:20 PM Module: 030405i Version: 21 Page: Comment: Objective 5 for this module states “Determine the minimum ampacity of the feeder overcurrent device required for a group of motors”; however, the phrase “minimum ampacity” is used incorrectly here. We are always looking for the maximum overcurrent device, not the minimum. This is stated right in the first sentence of Objective 5. Also, as per Section 0, the term “ampacity” is used for conductors not for equipment such as overcurrent devices. This objective should be reworded as “Determine the rating of the feeder overcurrent device required for a group of motors”. This wording matches well with the wording of Objective 3 in the same module. Status: Declined
2/8/2021 12:59:01 PM Module: 030405a Version: 21 Page: 1 Comment: The outcome for 030405a is to "Determine the size of conductors and conduit"; however, conduit sizing was moved to module 030405c during the last outline revision. Reword this outcome to state "Determine the size of conductors. Status: Declined
4/17/2020 10:26:27 AM Module: 030401c Version: 21 Page: Comment: The differential compound motor is noted as a motor used when a "nearly constant speed" is required. This is only true when operating at near full load, from no load to full load the overall speed regulation of a shunt motor is better than a differential compound but the speed curve of the differential is almost perfectly flat at near full load. I think this is confusing to students and could be explained better. Adding the differential compound motors speed curve to figure 37 and the torque curve to figure 38 would also be helpful. Status: Declined
2/24/2020 8:08:51 AM Module: 030401e Version: 21 Page: 18 Comment: The answer to question four is incorrect. Although this is how it is explained throughout this module it is fundamentally way off. If context is need please see Electrical Machines, Drives, and Power Systems text by Theodore Wildi, page 382. Status: Declined
2/12/2020 9:46:44 AM Module: 030405b Version: 21 Page: Comment: 030405b Grounding and Bonding and Distribution Layout – Section 10 • Objective 1, p. 2 – Figure 1 delete Circuit from picture Circuit grounding. Leave in just Grounding. • Objective 1, p.12 – The second bullet point should read “connect the grounded conductor…” • Objective 1, Figure 13 – Cross-out “Bonding Screw Installed” text in top left of diagram. Status: Implemented
2/12/2020 9:44:39 AM Module: 030405a Version: 21 Page: Comment: 030405a Conductors – Section 4 • Objective 1, Figure 2 – Should say “Ampacity = Table 1 Value…” (145 A is correct). • Objective 1, Example #3 (p.6, 7) –Add to picture for Panel board to wall greater than 1.2m. Also add from JB to wall greater than 1.2 m. • Objective 1, Example #4 (p.7) – Add to question 1.2 meters from panelboard to area and 1.2 meters at least from area to equipment. Or Change the question to below (from RW 90 conductor) TW 75 wire and Solution should indicate that the ampacity is reduced from the 75o degree column of Table 5A according to insulation: 80 A ÷ 0.75 = 106.6 A. Select a conductor from the 75o degree column of Table 2. A No. 2 AWG would be selected: 115 A x 0.75 = 86.2 A. A No 2 AWG with an allowable ampacity of 86.2 is acceptable for the 80 A load. • Objective 1 Exercise, Q.3 – Add 1.2 meters out of ambient area on either end of the conductor or Change questions to Conductor to (from RW 90) TW 75 Then change answer to #3 AWG. • Objective 2, Example (p. 14) Add based on service OC before Table 16 at bottom of page 14 • Objective 3, (p. 18) 4th line down add underline portion 4-008 1) c) 2) and 4-008 Appendix B • Objective 3 Title for Figure 9 should be changed to underline Figure 9 – Flow chart based on Rules 4-004, 4-006, 4-008 1) 2), and 4-008 Appendix B and Appendix D. • Objective 4, (p.21) Third paragraph down after Voltage Drop. Change last sentence to underlined. Table D4 is handy when applying Rule 46-306 for the remote lamps of unit equipment. • Objective 4, Example #2 (p.22) – Assume all equipment has 90o ratings. • Objective 4, Example #3 (p.24) – A #1 AWG has an allowable ampacity of 130 A at 75o. Status: Implemented
2/5/2020 11:48:55 AM Module: 030405h Version: 21 Page: 7 Comment: In the heading for row housing.....it should refer to 8-200 2) not 8-202 2) Status: Implemented
2/5/2020 11:46:00 AM Module: 030405h Version: 21 Page: 5 Comment: On page , for step 8 add information. Add rule 4-004 22) appendix B and include information that in order to use Table 39 ...markings and labels are required on the equipment to allow you to use Table 39. If no labels must use 14-104 and table 13 and table 2. Status: Declined
12/2/2019 2:08:29 PM Module: 030405e Version: 21 Page: 40 Comment: The answer to Question 1 should be FT6, not FT4. According to 2-130 Appendix B, FT4 rated conductor is suitable for combustible and non-combustible buildings. FT6 is also rated for the above-mentioned construction and may be used in a plenum as the question mentions. Consider supplying code rule and reference to the appendix as feedback for the question. Status: Declined
11/12/2019 9:25:55 AM Module: 030405n Version: 21 Page: Comment: Objective 5 has many formatting errors. Status: Implemented
11/12/2019 9:00:15 AM Module: 030405n Version: 21 Page: 12 Comment: When listing the two types of insulation shielding, bullet 1 "Non-metallic insulating shielding" is italicized while bullet 2 is not. Make consistent. Status: Implemented
10/22/2019 10:24:28 AM Module: 030405g Version: 21 Page: 19 Comment: The code rule in the second paragraph needs to be changed from 8-104 5) a) to 8-104 6) a) Status: Implemented
10/11/2019 3:11:31 PM Module: 030405h Version: 21 Page: 21 Comment: For the service calculation, everything is correct with the calculations. The issue is we should be saying T-4 and T-39 both use a 4/0awg with a 200A service. By just mentioning T-4 you may assume T-39 is not considered. If I’m incorrect in my interpretation please get back to me. Status: Declined
1/1/2019 12:00:00 AM Module: 030405a Version: 12 Page: 24 Comment: Would you please check on the DCF (Table D3) formula and add clarification to the ILM as to whether you use the rated conductor temperature or the Conductor allowable ampacity, based on termination temperature. The Masters course offered by NAIT uses Termination Temperature to determine the conductor ampacity and this makes sense based on rule 4-006. Our ILM uses the 90 deg ampacity based on Table 2, yet gives termination temperature of 75 deg 0 Status: Implemented
1/1/2019 12:00:00 AM Module: 030405g Version: 12 Page: 5 Comment: First paragraph line five states subrule (2) subrule(3) should be subrule (3) subrule(4) Status: Implemented
1/1/2019 12:00:00 AM Module: 030405d Version: 12 Page: 4 Comment: first sentance of page 4 reads If a conductor is 3m or less and fulfills the requirements of Rule 14-100(c), it may be smaller than required by Rule 14-100(b) and still be acceptable. if we are going to make a statement like this an example would have to be provided to back this up as this is a very unlikely event and may cause confusion for student Status: Declined
1/1/2019 12:00:00 AM Module: 030405g Version: 12 Page: 16 Comment: second paragraph line 2 states a no. 10AWG 90C conductors has an allowable ampacity of 35 A A No 10 AWG from the 75 degree colomn has an allowable ampacity of 35A from the 90 degree colomn the allowable ampacity is 40A Suggest changing too- from the 75 degree colomn the allowable ampacity for the No. !0 AWG 90 degree would be 35A Status: Implemented
1/1/2019 12:00:00 AM Module: 030405i Version: 14 Page: 24 Comment: 3rd paragraph If locked rotor current is not listed on the equipment nameplate, it is assumed to be six times the full load current rating. (we do not have to assume cec gives us a value to use) should read If locked rotor current is not listed on the equipment Refer to Rule 28-010 Locked rotor current rating where not marked, deemed to be equal to six times the FLA rating from the nameplate Status: Implemented
1/1/2019 12:00:00 AM Module: 030405l Version: 12 Page: 20 Comment: Question 5, obj. 2 The term 'may be' denotes permission to do something. The given answer is False for this question. It should be True. You may install equipment approved for Class1, Div 1 locations in a Zone 0. The question does not state any requirements. So, as long as specific requirements are met, YOU MAY INSTALL class1 div 1 equipment in zone 0 Status: Implemented