Ten free practice questions on Canadian Electrical Code rules, for Part 2 (Canadian Electrical Code) of Alberta's Master Electrician exam, which the Safety Codes Council runs. We group the exam's two parts into four study units of our own, and this is Unit C. These are original questions written by TicketPrep from the documents in the Council's 2024 Exam Kit and the rule numbers of the Canadian Electrical Code, not questions from the exam. Each has four options and one correct answer, as every question in our bank does. Answer each one before opening the explanation. No account, no email.
01The questions
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An ME's crew has finished rough-in at a school addition in an accredited municipality. CEC Rule 2-012 tells the contractor to notify the inspection department in writing before work is concealed. In Alberta, what decides whether and how the ME must request that inspection?
- An inspection-notice requirement in the Permit Regulation for every permit
- CEC Rule 2-012 as written, since Alberta adopts the CEC unamended
- The municipality's bylaw or policy as the authority having jurisdiction
- A province-wide 48-hour notice period set by STANDATA 24-ECB-002
Show the answer
C. Correct. STANDATA 24-ECB-002 explains that Alberta legislation supersedes the CEC's administrative rules, and that under Rule 2-012 each AHJ sets inspection requirements, including whether notification is needed, by bylaw or policy. The same holds for availability of work for inspection (Rule 2-028).
Why not the others
A. The Permit Regulation sets who may obtain permits and where they are required; it has no inspection-notice section. STANDATA 24-ECB-002 leaves notification for inspection to each AHJ's bylaw or policy.
B. The CEC is adopted unamended, but its administrative Rules 2-000 to 2-034 generally do not apply because rules stemming from legislation take precedence (24-ECB-002). Rule 2-012's written notice gives way to the AHJ's own inspection requirements.
D. 24-ECB-002 sets no notice period; it says the AHJ's bylaw or policy defines whether notification for inspection is required. A fixed 48-hour notice belongs to another jurisdiction's system, not Alberta's.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rules 2-012, 2-028; STANDATA 24-ECB-002
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A new six-storey condominium building gets a separate supply service for its fire pump, and the fire pump service box is in the pump room at the far end of the parkade, away from the main service boxes. Under CEC Rule 6-102, what must be provided?
- An interlock so the fire pump service opens with the main service
- A variance, since all service boxes of one building must be grouped
- A permanent diagram at each service box locating the other boxes
- A sign at the fire pump service box only, pointing to the main service
Show the answer
C. Correct. Rule 6-102 1) a) allows an additional supply service for a fire pump (Rule 32-304 1)), 6-102 2) requires the service boxes to be grouped where practicable, and 6-102 3) requires a permanent diagram on or near each service box that is not grouped, showing the location of all the other service boxes supplying the building.
Why not the others
A. Tying the fire pump service to the main disconnect would defeat the reason for a separate fire pump supply service; Rule 6-102 3) asks for locating diagrams at the service boxes.
B. Rule 6-102 2) requires grouping only where practicable; where the boxes are not grouped, 6-102 3) calls for permanent locating diagrams, not a variance.
D. The diagram goes on or near each service box that is not grouped, not only the fire pump box, and it shows the location of all the other service boxes (Rule 6-102 3)).
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rule 6-102
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An older house's metal water service, which has served as its grounding electrode, is being replaced with plastic pipe. Following STANDATA 24-ECB-010 and CEC Rule 10-102, what should the ME's crew provide?
- A bonding jumper across the new plastic section of the service
- No new electrode, since the interior metal water piping stays bonded
- A grounding connection moved to the house side of the water meter
- An alternate grounding electrode of a kind Rule 10-102 permits
Show the answer
D. Correct. STANDATA 24-ECB-010 says that when a metal water service that acted as the grounding electrode is changed to non-metal pipe, another electrode should be installed, of a kind Rule 10-102 permits (manufactured, field-assembled or in-situ). A jumper is its remedy only where a non-metal device, such as a softener, is inserted into a metal water line that remains the electrode.
Why not the others
A. A jumper around a non-metal section is the bulletin's remedy where a non-metal device, such as a softener, is inserted into a metal water line that still serves as the electrode; once the whole service is plastic, no metal electrode remains to bridge, so an alternate electrode is needed.
B. Equipotential bonding of interior piping under Rule 10-700 is not a grounding electrode; with the metal water service gone, the system needs an alternate electrode (24-ECB-010).
C. 24-ECB-010 puts a water-pipe electrode connection on the street side of the meter near the entry, but with the service now plastic, no point on the piping can serve as the electrode.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rules 10-102, 10-700; STANDATA 24-ECB-010
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During an acreage-house renovation, an NMD90 branch circuit must pass a masonry chimney's cleanout door, and the framing leaves only 60 mm of air space between the cable and the cleanout. Under Rule 12-556, what makes this route acceptable?
- A non-metallic sleeve over the cable where it passes the door
- Nothing more, as 50 mm of air space is enough beside masonry
- A building-code thermal barrier keeping it at 30 °C or less
- A cylindrical bushing extending 13 mm past each side of the stud
Show the answer
C. Correct. Rule 12-556 4) c) calls for 150 mm of air space between NMD90 and chimney or flue cleanouts, so 60 mm fails; Rule 12-556 5) allows instead a thermal barrier meeting the National Building Code or local building legislation that keeps the cable's ambient at 30 °C or less. The other spacings are 25 mm from heating ducts and piping and 50 mm from masonry or concrete chimneys.
Why not the others
A. A non-metallic sleeve is a Rule 12-568 2) way to protect exposed cable from mechanical damage; it does nothing to limit heat transfer. Near a cleanout, Rule 12-556 needs 150 mm of air space or a qualifying thermal barrier.
B. 50 mm is the Rule 12-556 4) b) spacing from the masonry or concrete chimney itself. Cleanouts need more: 150 mm under 4) c), or a thermal barrier holding the cable at 30 °C or less under 5).
D. Cylindrical bushings are a Rule 12-566 1) b) option for cable through framing too near its edges; they protect against nails, not heat. Rule 12-556 4) c) and 5) govern the cleanout: 150 mm of air or a thermal barrier.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rules 12-556, 12-566, 12-568
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At a strip mall, the fault study gives 35 kA at the service switchboard and 12 kA at a tenant panelboard at the end of a 60 m feeder. The panel's branch breakers have an 18 kA interrupting rating and no series rating. Under Rule 14-012, are they acceptable?
- Yes; they exceed the fault current at their own terminals
- No; every device must be rated for the 35 kA at the service
- No; branch breakers must be series rated with the main breaker
- Yes, but only if the feeder breaker is a current-limiting type
Show the answer
A. Correct. Rule 14-012 a) requires equipment that interrupts fault current to be rated for the voltage and for the fault current available at its terminals. The feeder's impedance has cut the available fault current at this panel to 12 kA, so 18 kA breakers are adequate. Re-check if the supply or the feeder changes.
Why not the others
B. Ratings are judged at the device's own terminals, not at the service. Rule 14-012 a) uses the fault current available where the equipment is installed, which here is 12 kA.
C. A series rating under Rule 14-014 is needed only when a breaker is applied above its own interrupting rating. These 18 kA breakers already exceed the 12 kA available at their terminals (Rule 14-012 a)).
D. A current-limiting upstream device matters for a series-rated combination under Rule 14-014. Here the breakers' own 18 kA rating exceeds the 12 kA available at the panel, so Rule 14-012 a) is met without one.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rules 14-012, 14-014
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In a new house, the basement panelboard is mounted with its top breaker handle at the 1.7 m limit, and several NMD90 cables enter its bottom, exposed for about 200 mm below 1.5 m above the floor. Under Rules 26-600 and 12-568, as STANDATA 24-ECB-026 applies them, what protection do those cables need?
- A non-metallic sleeve with bushings over each exposed length
- Nothing more than the panel's own protected location
- Guard strips at least 19 mm × 38 mm on each side of the cables
- Raising the panel so every cable enters above 1.5 m
Show the answer
B. Correct. Rule 26-600 2) keeps dwelling panelboards low (no handle above 1.7 m), which can bring cables within the 1.5 m zone where Rule 12-568 1) b) asks for protection of exposed cable. STANDATA 24-ECB-026 reasons that a panelboard is installed where it is not subject to damage, so cable entering it meets the intent of the 1.5 m rule without added protection. (The bulletin cites 12-518; in CEC 2024 the NMD90 rule is 12-568.)
Why not the others
A. A non-metallic sleeve is one way Rule 12-568 2) allows NMD90 to be protected, but STANDATA 24-ECB-026 finds that cable entering a properly located dwelling panelboard already meets the intent of the 1.5 m protection rule.
C. Running boards and guard strips are Rule 12-564 measures for attics, exposed joists and stud faces; for cable entering a panelboard located under Rule 26-600, STANDATA 24-ECB-026 says no added protection is needed.
D. Raising the panel would put its top handle above the 1.7 m maximum of Rule 26-600 2). STANDATA 24-ECB-026 resolves the conflict the other way: the cable entering the panel needs no added protection.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rules 26-600, 12-564, 12-568; STANDATA 24-ECB-026
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A gas plant near Grande Prairie was classified under the Division system before Section 18 moved to Zones, and the owner is now adding a compressor skid. Under Rule 18-000, what governs the addition?
- The new skid must be classified in Zones while the existing plant keeps Divisions
- The whole plant must be reclassified to the Zone system before the new skid is connected
- Divisions may continue, but Appendix J is informative only, so the Section 18 Zone rules apply
- Divisions may continue, with Annexes J18 and J20 of Appendix J applying as mandatory rules
Show the answer
D. Correct. Rule 18-000 permits continued use of the Division system for additions, modifications, renovations, operation and maintenance of an existing Division facility, and then makes Annexes J18 and J20 apply. The Appendix J notes make its Introduction and Annexes J18, J20, JD and JT normative for Division installations; only Annex JB is informative.
Why not the others
A. Rule 18-000 permits, rather than forbids, continued Division classification for an addition to an existing Division facility; the skid may be done under Annexes J18 and J20.
B. No reclassification is forced: Rule 18-000 lets an existing Division facility keep Divisions for additions and modifications, applying Annexes J18 and J20.
C. Appendix B and Annex JB are informative, but Annexes J18 and J20 are normative (mandatory) for Division installations, and Rule 18-000 makes them the rules that apply when Divisions are kept.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rule 18-000
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A new acreage house near Strathmore has 120 V smoke alarms with no battery and combination smoke and CO alarms with an integral battery secondary supply. The bedroom lighting circuits are AFCI protected. Under Rule 32-200, which alarms may be on those AFCI-protected circuits?
- Both kinds, battery or not, since the circuits are already AFCI protected
- Only the combination smoke and CO alarms with battery backup
- Neither kind; smoke and CO alarms need a dedicated unprotected circuit
- Both kinds, if a switch at each alarm lets it be isolated for testing
Show the answer
B. Correct. Rule 32-200 1) b) keeps smoke and CO alarms off GFCI- or AFCI-protected circuits, and 32-200 2) relaxes that for an alarm with an integral battery as a secondary supply. The battery-backed combination alarms may share the AFCI circuit; the alarms with no battery may not. All are fed from a lighting or mixed lighting and receptacle circuit.
Why not the others
A. Rule 32-200 1) b) keeps an alarm without an integral battery secondary supply off any AFCI- or GFCI-protected circuit, whatever protection the circuit itself carries; only the battery-backed combination alarms may share the AFCI circuit (32-200 2)).
C. Rule 32-200 1) a) calls for supply from a lighting circuit or a mixed lighting and receptacle circuit, not a dedicated one; and 32-200 2) allows battery-backed alarms on AFCI-protected circuits.
D. Rule 32-200 1) c) forbids any disconnecting means between an alarm and its branch-circuit overcurrent device, so a local switch is not allowed; the AFCI question turns on the integral battery.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rule 32-200
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A tenant fit-up in an existing Red Deer office building adds two pull stations and four horn-strobes to the building's fire alarm system. The property manager wants the CFAA-certified fire alarm technician who does the annual inspections to install them. Under the Alberta joint interpretation on existing fire alarm systems, who may do this work?
- Either one, provided the work is verified to CAN/ULC-S537 afterwards
- The technician, since adding devices is maintenance of the system
- The technician for devices, with an electrician doing only new wiring
- Only a qualified electrician, since additions count as installation
Show the answer
D. Correct. The joint interpretation 23-BCI-011/24-ECI-009/23-FCI-006 treats additions and modifications to an existing fire alarm system as installation, which only an electrician qualified under NFC(AE) Division C may do; qualified fire alarm technicians may inspect, test and maintain. The work also needs an electrical permit (Permit Regulation s.8(1)).
Why not the others
A. Verification to CAN/ULC-S537 is still needed after the change, but it does not widen who may install: additions are installation work for qualified electricians only under the joint interpretation.
B. Maintenance is the removal, replacement or servicing of devices found inoperative; adding new pull stations and horn-strobes is an addition, which the joint interpretation classes as installation for qualified electricians only.
C. The joint interpretation does not split an addition between trades: additions and modifications are installation, done by a qualified electrician, and only electricians replace or repair fire alarm wiring.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); STANDATA 24-ECI-009
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A homeowner in Cochrane is setting a self-contained hot tub with a moulded non-conductive shell on a new concrete patio. The unit is certified as a storable unit for above-ground outdoor use. Under 24-ECI-068, is the Rule 68-058 3) c) copper ring required around it?
- No; the Alberta interpretation exempts this kind of unit from the ring
- Yes; a No. 6 AWG bare copper ring 450 mm to 600 mm out, 100 mm to 150 mm deep
- Yes, unless the unit sits on a raised wooden deck rather than a concrete patio
- No, but only once a safety codes officer grants a variance for the site
Show the answer
A. Correct. 24-ECI-068 reads Rule 68-058 3) c) as not reaching storable pools, spas or hot tubs set above ground and built with a non-conductive shell, provided they are certified under the Electrical Code Regulation for above-ground outdoor use; the maker's installation instructions are followed. Read without this Alberta interpretation, the national text would call for the ring.
Why not the others
B. That is the ring Rule 68-058 3) c) describes for spa and hot tub installations, but 24-ECI-068 says it does not apply to certified above-ground storable units with a non-conductive shell.
C. The Appendix B note on raised non-conductive surfaces is guidance; the Alberta interpretation 24-ECI-068 already removes the 68-058 3) c) ring for this certified storable unit whatever it sits on.
D. No variance is needed: 24-ECI-068 is a province-wide interpretation that the 68-058 3) c) ring does not apply to certified storable units with a non-conductive shell.
Source: SCC exam Part 2: Canadian Electrical Code (our Unit C); CEC Rules 68-058, 68-402; STANDATA 24-ECI-068
02Answer key
| Question | Answer | Our objective |
|---|---|---|
| Q1 | C | Objective C-1 |
| Q2 | C | Objective C-2 |
| Q3 | D | Objective C-3 |
| Q4 | C | Objective C-4 |
| Q5 | A | Objective C-5 |
| Q6 | B | Objective C-6 |
| Q7 | D | Objective C-7 |
| Q8 | B | Objective C-8 |
| Q9 | D | Objective C-8 |
| Q10 | A | Objective C-9 |
03What Unit C covers
Part 2 of the Safety Codes Council's Master Electrician exam is the Canadian Electrical Code: 70 questions on the CEC, Part I, 26th edition (2024), which candidates buy separately and may bring into the exam. The Council does not separate rule questions from calculations, so our Units C and D are our own split of Part 2. Unit C is the rule lookups that need no arithmetic: Section 0 definitions and Section 2 general rules as they work in Alberta, conductors, services and metering, grounding and bonding, wiring methods, protection and control, panelboards, receptacles and AFCI, hazardous and special locations, motors, lighting, fire alarm and emergency systems, and the special sections from high voltage and elevators to PV, storage, pools, temporary power and EV charging. Alberta has no amended Code text; where Alberta applies a rule differently, it says so in Electrical STANDATA, and our questions name the bulletin or interpretation.
The Council publishes the two parts and their question counts, 50 and 70, and lists the documents the exam covers, but it does not say how many questions each document or topic gets. Unit C and Unit D together make up Part 2; the split between them, the nine objectives below and the right-hand column are TicketPrep's own. The column is how many questions our bank holds on each objective, Standard and Advanced together, not a count from the exam.
| Our objective | In our bank |
|---|---|
| Objective C-1 Apply CEC 2024 Section 0 definitions and Section 2 general rules as they operate in Alberta, including approvals, variances, marking, working space and enclosures | 15 |
| Objective C-2 Apply CEC 2024 Section 4 conductor rules (not ampacity arithmetic) and Section 6 services and metering with the Alberta STANDATA on services | 21 |
| Objective C-3 Apply CEC 2024 Section 10 grounding and bonding rules (not conductor sizing) with Alberta STANDATA on electrodes, generators, rigs and the one-rod variance | 16 |
| Objective C-4 Apply CEC 2024 Section 12 wiring methods and box rules (no fill arithmetic), including the 2024 NMSC renumbering and Alberta wiring STANDATA | 22 |
| Objective C-5 Apply CEC 2024 Section 14 protection and control rules (not OCP sizing arithmetic) and Section 16 Class 1 and Class 2 circuit rules | 14 |
| Objective C-6 Apply CEC 2024 Section 26 rules for panelboards, AFCI, receptacles, ranges, transformers, capacitors and liquid-filled equipment with Alberta interpretations | 16 |
| Objective C-7 Apply CEC 2024 Sections 18, 20, 22 and 24 to hazardous, special, corrosive and patient care locations with Alberta classification and spray-booth requirements | 13 |
| Objective C-8 Apply CEC 2024 Section 28 motor protection, control and disconnect rules (no sizing), Section 30 lighting, Section 32 fire alarm and fire pumps, and Section 46 emergency systems | 10 |
| Objective C-9 Apply CEC 2024 special sections 36 to 86 (HV, elevators, communications, heating, PV and ESS, carnivals, pools, temporary, marine, interconnection, EV) and appendix status in Alberta | 16 |
04What the questions turn on
In Alberta, the CEC is read with STANDATA
Alberta legislation, not the CEC's own administrative rules, sets how inspections are requested: STANDATA 24-ECB-002 leaves notification to each authority having jurisdiction. Alberta interpretations can also change the result of a rule: 24-ECI-068 takes certified above-ground hot tubs with a non-conductive shell out of the pool-bonding ring, and 24-ECB-026 accepts cables entering a low dwelling panelboard without added protection.
When the water pipe stops being the electrode
STANDATA 24-ECB-010 says that when a metal water service that served as the grounding electrode is replaced with plastic, another electrode of a kind Rule 10-102 permits should go in; a bonding jumper is the fix only where a non-metal device is inserted in a metal line that stays. The same bulletin explains how deep a plate under a basement must be buried, measured from the final floor surface above it.
Ratings are judged at the equipment's own terminals
Rule 14-012 asks whether a breaker can interrupt the fault current available at its own terminals, not at the service. A long feeder can cut that current enough for lower-rated branch breakers to be acceptable at a tenant panel, and the answer has to be re-checked if the supply or the feeder changes.
Life-safety circuits have their own rules
Smoke and CO alarms stay off AFCI- and GFCI-protected circuits unless they have an integral battery as a secondary supply (Rule 32-200). In Alberta, adding devices to an existing fire alarm system counts as installation, which a qualified electrician must do under a permit. And a plant classified under the old Division system may keep using it for an addition, with Annexes J18 and J20 of Appendix J applying (Rule 18-000).
05The other units
To pass the Master Electrician exam you need at least 60 per cent on each of the two parts and a 75 per cent average of the two part scores, so a weak part fails the exam even when the average is high. Each of our units has its own page of free questions:
The Alberta Master Electrician practice test page describes the full question bank. How these questions are written and checked: how our questions are made. Found a mistake? Tell us and we will fix it. TicketPrep is not affiliated with the Safety Codes Council or CSA Group, and no CEC text is reproduced here: the questions cite Rule numbers and explain the requirement in their own words.