February 24, 2022 – Welcome to the newest round of questions that test your knowledge of the CE Code-Part I. Answers will appear in the April 2022 edition of Electrical Business Magazine (and here at EBMag.com).

QUESTION 1: Conductors for equipotential bonding shall be permitted to be installed as open wiring, provided that they are adequately secured.

a) True
b) False

QUESTION 2: What size of copper tap conductor is required to connect a metal fence around an outdoor substation to the station ground electrode?

a) #6 AWG
b) 2/0 AWG
c) 3/0 AWG
d) 4/0 AWG

QUESTION 3: Receptacles having CSA configurations 5-15R or 5-20R installed in buildings under construction:

a) shall be protected by GFCI Class A.
b) can be wired by NMSC.
c) shall be kept entirely separate from lighting branch circuits.
d) all of the above.

ANSWERS to Code Conundrum December 2021 edition.

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. Rule 14-212.

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. Rule 22-100(3).

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

a) provided by a separate circuit. Rule 32-108(1).
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.

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 column—along with more great content—appears in the February 2022 edition of Electrical Business Magazine. Back issues are located in our Digital Archive.