Part 1: Reference Publications

CEC: Canadian Electrical Code
ULC: Underwriters’ Laboratories of Canada
NEMA: National Electrical Manufacturers Association
CEA: Canadian Electricity Association
ANSI: American National Standards Institute
IEEE: Institute of Electrical and Electronics Engineers
CSA: Canadian Standards Association
NRCC: National Research Council Canada
NFPA: National Fire Protection Association
OBC: Ontario Building Code
ISO: International Organization for Standardization

Part 2: Wires and Cables

AWG: American Wire Gauge
kcmil: Kilo Circular Mils
NMSC: Non-Metallic Sheathed Cable
NMD90: Non-Metallic Dry Sheathed Cable 90°C
NMW: Non-Metallic Wet Sheathed Cable
NMWU: Non-Metallic Wet Underground Sheathed Cable
AC-90: Armored Cable 90°C
ACWU: Armored Cable Wet Underground
MIC: Mineral Insulated Cable
LWMI: Light Weight Mineral Insulated
ASC: Armor-Sheathed Cable
NS-1: Neutral Supported Cable
NSF-2: Neutral Supported Flame Cable
FCC: Flat Conductor Cable
CFC: Communication Flat Cable
USEI90: Underground Service Entrance Cable
XLPE: Cross-Linked Polyethylene
TW75: Thermal Plastic Insulated Wet
RA90: Rubber Aluminum Sheathed
FAS: Fire Alarm and Signal Cable
LVT: Low Voltage Thermal Plastic
ELC: Electronic Load Controller
TEW: Thermal Plastic Insulated Electrical Wire
SEW-2: Silicon Rubber Insulated Wire
ZSW: Station Wire
ASLC: Airport Series Lighting Cable
TC: Tray Cable
CIC: Control and Instrumentation Cable
ICS: Ignition Cable Silicon

Part 3: Conduits, Raceways and Miscellaneous

GRS: Galvanized Rigid Steel Conduit
HFT: Halogen-Free Thermal Plastic
ENMT: Electrical Non-Metallic Tubing
PVC: Polyvinyl Chloride
RTRC: Rigid Non-Metallic Conduit of Reinforced Thermal-Set Material
EMT: Electrical Metallic Tubing
DC: Direct Current
DP: Drip Proof (Code Book 2-404 A)
WP: Water Proof (Code Book 2-404 B)
TE: Totally Enclosed
HRC: High Ruptured Capacity (Fuses)
GFCI: Ground Fault Circuit Interrupter
AFCI: Arc Fault Circuit Interrupter
CATV: Community Antenna Television

Part 4: Format and General Arrangement

1. The numbering system used to identify sections and rules in the codebook is as follows. Even numbers (not odd numbers) have been used to identify sections and rules. Rule numbers consist of the section number separated by a hyphen from the 3- or 4-digit figure.

2. Odd numbers may be used for new rules required by interim revisions.

3. The rule numbers sometimes change from one edition to another due to the introduction of some new rules and the deletion of some existing rules.

4. The rules in the codebook are arranged as follows:

00-000: Rule
(1): Sub-Rule
(a): Item
(i): Item
(A): Item

5. Rules that are new or revised from the previous edition of the textbook are marked in the text of the code by the symbol delta (Δ) in the margin.

6. The “General Sections” of the code include sections 0-16 and 26.

7. Sections of the code that are not the general sections are called supplements or amendments.

8. Three reasons why code rules may be added, revised or changed include:

- Harmonization with the National Electrical Code (U.S.A.)
- New technology in the workplace.
- Industry practices.

9. The three types of information found in the table of contents include:

- Section Titles/Headings
- Page Titles/Sub-Headings
- Page Numbers

10. Commonly used units and their conversion factors from Metric to Imperial and vice versa can be found in the table on page xxvi.

11. The conduit sizing shows the metric trade designator first, with the value in inches following in parentheses.