November 28, 2021 – Welcome to the newest round of Code Conundrum questions (from our December 2021 edition), which test your knowledge of the Canadian Electrical Code (CE Code) Part I.

Answers to these new questions will be found in our upcoming February 2022 edition (and here at EBMag.com).

QUESTION 1: Where circuit overload protection is provided by other means, fuses that are permitted to be used for overcurrent protection are:

a) Class C
b) HRCII-MISC
c) Class H
d) A and B

QUESTION 2: A moulded-case circuit breaker is permitted to be located in a Category 2 location so long as it is contained in a NEMA-1 enclosure.

a) True
b) False

QUESTION 3: The power supply of a fire alarm system shall be:

a) provided by a separate circuit.
b) interlocked with emergency lighting circuit in a hotel.
c) kept at least 3.0 m from any combustible material.
d) all of the above.

ANSWERS to Code Conundrum October 2021 edition.

ANSWER 1: The CE Code allows the use of non-metallic sheathed cable in a building of combustible construction.

a) True. Rule 12-504.
b) False

ANSWER 2: Where conductors are used in exposed wiring and are subject to corrosive liquids or vapours in a Category 2 location, they shall be of a type with corrosion-resistant protection, and be located more than ___ horizontally from floors, decks or stairs.

a) 1.0 m
b) 1.5 m. Rule 22-202(1).
c) 2.0 m
d) 2.5 m

ANSWER 3: In a dwelling unit, what is the maximum allowable height of the handle of a panelboard’s overcurrent device?

a) 1.5 m
b) 1.6 m
c) 1.7 m. Rule 26-600(2).
d) 1.8 m

How did YOU do?

3 • Seasoned journeyman
2 • Need refresher training
1 • Apprentice
0 • Just here for fun!

Ray Yousef is a code engineer with Ontario’s Electrical Safety Authority.

This feature—plus more great content—appears in the December 2021 edition of Electrical Business Magazine. Even more back issues are located in our Digital Archive.