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Code Conundrum April 2023

April 7, 2023 | By Ray Yousef


Tackle the Code Conundrum... if you dare!


April 7, 2023 – Welcome to the newest round of questions that test your knowledge of the CE Code-Part I. Answers will appear in the April 2023 edition of Electrical Business Magazine, and online at EBMag.com under Features.


QUESTION 1 – When a two-conductor NMS cable is used for a switch loop, does the Code require you to tape the white wire with Black tape at the switch, if the connections are made so that the actual Black wire is the return conductor from the switch to the outlet?

a) Yes
b) No

QUESTION 2 – All space within 6 metres horizontally in any direction from dip tanks and their drain boards, with the space extending to a height of 1 m above the dip tank and drain board, is considered:

a) Zone 1
b) Zone 2
c) Category 1
d) Category 2

QUESTION 3 – Conductors in the high-voltage circuits of X-ray equipment shall be of the ___ type.

a) TC
b) RW
c) Shockproof
d) Extra-hard usage


ANSWERS to Code Conundrum Winter 2023 edition

QUESTION 1 – It is permitted to use electrical non-metallic tubing (ENT) underground and in concealed locations; however, it is not permitted in exposed locations.

a) True
b) False. Rule 12-1500.

QUESTION 2 – Which of the following CSA receptacle configurations is required for an electric range, having a calculated demand of 50A or less, in a dwelling unit?

a) L7-15R
b) 14-20R
c) 14-50R. Rule 26-744(4).
d) 15-50R

QUESTION 3 – For a mobile home, the minimum length of #6AWG power supply cord measured from the attachment plug to the point of entrance to the unit is:

a) 4.0 m
b) 5.0 m
c) 6.0 m
d) 7.5 m. Rule 70-108(1)(e).


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.

You’ll find all Back Issues of Electrical Business Magazine in our Digital Archive.


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