Question 1

Voltage drop calculation

Accepted Answer

Formula: VD = (2 x K x I x L) / CM, where VD is voltage drop, K is a constant, I is current, L is length, and CM is circular mils.

Question 2

Conduit fill calculation

Accepted Answer

Determining the maximum number of conductors allowed in a conduit to prevent overheating.

Question 3

Box fill calculation

Accepted Answer

Calculating the maximum number of conductors, devices, and fittings that can fit within an electrical box.

Question 4

Transformer connections

Accepted Answer

Delta and Wye configurations, their characteristics, and applications.

Question 5

Motor starter types

Accepted Answer

Direct-on-line (DOL), Star-delta, Autotransformer, and Soft starters.

Question 6

Electric motor types

Accepted Answer

Induction motors, Synchronous motors, and DC motors, their construction, and working principles.

Question 7

Grounding vs. bonding

Accepted Answer

Differences, objectives, and requirements for proper electrical installations.

Question 8

Arc flash hazard

Accepted Answer

Definition, causes, and prevention methods in the electrical workplace.

Question 9

Short circuit current rating (SCCR)

Accepted Answer

Maximum fault current a device can withstand without damage.

Question 10

Overcurrent protection devices

Accepted Answer

Fuses, circuit breakers, and ground fault circuit interrupters (GFCIs).

Question 11

Cable tray types

Accepted Answer

Ladder, solid-bottom, and trough, their uses and installation guidelines.

Question 12

Conductor insulation types

Accepted Answer

THHN, THWN, XHHW, and USE, their temperature ratings, and applications.

Question 13

Emergency systems

Accepted Answer

Generator, inverter, and UPS systems for emergency power and lighting.

Question 14

Hazardous locations

Accepted Answer

Classifications, protection methods, and equipment used in these areas.

Question 15

Motor control center (MCC)

Accepted Answer

Definition, components, and layout for controlling multiple motors.

Question 16

Load calculations

Accepted Answer

Determining the total electrical demand for a residential, commercial, or industrial building.

Question 17

Branch circuit vs. feeder circuit

Accepted Answer

Definitions, differences, and electrical code requirements.

Question 18

Power factor correction

Accepted Answer

Importance, capacitor sizing, and installation methods.

Question 19

Electrical symbols

Accepted Answer

Standard symbols used in electrical drawings and schematics.

Question 20

Electrical drawings

Accepted Answer

Single-line diagrams, schematic diagrams, and wiring diagrams.

Question 21

Ohm's Law

Accepted Answer

Formula: V = IR, where V is voltage, I is current, and R is resistance.

Question 22

Kirchhoff's Laws

Accepted Answer

Kirchhoff's Current Law (KCL) and Kirchhoff's Voltage Law (KVL).

Question 23

Motor nameplate data

Accepted Answer

Information provided on a motor nameplate and its interpretation.

Question 24

Conductor sizing

Accepted Answer

Factors affecting conductor size, including current capacity, voltage drop, and ambient temperature.

Question 25

Cable bending radius

Accepted Answer

Minimum bending radius for cables to prevent damage during installation.

Question 26

Pulling tension

Accepted Answer

Maximum force allowed when pulling conductors to prevent damage.

Question 27

Electrical enclosure types

Accepted Answer

NEMA ratings and their applications in various environments.

Question 28

Disconnecting means

Accepted Answer

Types and requirements for safe disconnection of electrical equipment.

Question 29

Service entrance equipment

Accepted Answer

Components and installation requirements for service entrances.

Question 30

Ground fault protection

Accepted Answer

Types, settings, and applications of ground fault protection devices.

Question 31

Transformer impedance

Accepted Answer

Importance in short circuit calculations and transformer sizing.

Question 32

Conductor derating

Accepted Answer

Factors affecting conductor ampacity and derating calculations.

Question 33

Raceway types

Accepted Answer

EMT, Rigid, PVC, and IMC conduits, their uses, and installation guidelines.

Question 34

Voltage ratings

Accepted Answer

Low, medium, and high voltage designations and their applications.

Question 35

Electrical safety equipment

Accepted Answer

Personal protective equipment (PPE) and safety procedures.

Question 36

Fire alarm systems

Accepted Answer

Components, types, and installation requirements for fire alarm systems.

Question 37

Lighting control systems (cont.)

Accepted Answer

Photocells, daylight harvesting, and centralized lighting control systems.

Question 38

Energy efficiency measures

Accepted Answer

LED lighting, variable frequency drives (VFDs), and demand-side management techniques.

Question 39

Canadian Electrical Code (CEC)

Accepted Answer

Overview, purpose, and structure of the code for safe electrical installations.

Question 40

Lockout/tagout procedures

Accepted Answer

Steps to safely isolate and de-energize electrical equipment.

Question 41

Conductor color coding

Accepted Answer

Standard color codes for identification of phase, neutral, and ground conductors.

Question 42

Cable support systems

Accepted Answer

Cable tray, conduit, wireway, and cable ladder, their uses and installation guidelines.

Question 43

Motor protection devices

Accepted Answer

Overload relays, thermal protectors, and electronic protection methods.

Question 44

Circuit analysis techniques

Accepted Answer

Mesh analysis, nodal analysis, and Thevenin's and Norton's theorems.

Question 45

Phase-to-phase vs. phase-to-neutral

Accepted Answer

Differences in voltage and current measurements in three-phase systems.

Question 46

Transformer cooling methods

Accepted Answer

Oil-immersed, air-cooled, and forced-air cooling techniques.

Question 47

Circuit tracing

Accepted Answer

Methods and tools for identifying and tracing electrical circuits in a facility.

Question 48

Electrical testing equipment

Accepted Answer

Multimeters, clamp meters, insulation testers, and earth ground testers.

Question 49

Fault analysis

Accepted Answer

Symmetrical components, sequence networks, and fault calculations in three-phase systems.

Question 50

Electrical maintenance

Accepted Answer

Preventive, predictive, and corrective maintenance techniques for electrical systems.

Question 51

Surge protection devices

Accepted Answer

Types, applications, and installation guidelines for protecting equipment from voltage surges.

Question 52

Power quality issues

Accepted Answer

Harmonics, voltage fluctuations, and flicker, their causes and mitigation methods.

Question 53

Cable ampacity

Accepted Answer

Factors affecting cable current-carrying capacity and ampacity calculation.

Question 54

Metering equipment

Accepted Answer

Types and installation requirements for electric utility metering.

Question 55

Lightning protection

Accepted Answer

Components, design, and installation of lightning protection systems.

Question 56

Busway systems

Accepted Answer

Advantages, types, and installation guidelines for busway systems.

Question 57

Motor control devices

Accepted Answer

Contactors, relays, motor starters, and soft starters, their uses, and selection criteria.

Question 58

Branch circuit protection

Accepted Answer

Overcurrent protection device sizing and selection for branch circuits.

Question 59

Feeder circuit protection

Accepted Answer

Overcurrent protection device sizing and selection for feeder circuits.

Question 60

Heat tracing systems

Accepted Answer

Electric heat tracing cables, their types, applications, and installation guidelines.

Question 61

Intrinsically safe systems

Accepted Answer

Definition, components, and design principles for hazardous locations.

Question 62

Neutral grounding

Accepted Answer

Solidly grounded, ungrounded, and resistance-grounded systems, their characteristics, and applications.

Question 63

Emergency stop devices

Accepted Answer

Types, applications, and installation requirements for emergency stop devices.

Question 64

Sizing junction boxes

Accepted Answer

Determining the appropriate size of junction boxes for various applications.

Red Seal Exam: Construction Electrician Flashcards