Electrical Business

Features Code Conundrum Codes & Standards

Code Conundrum June 2020

June 16, 2020 | By Ray Yousef

Tackle the Code Conundrum… if you dare!

Answers to this month’s questions will appear in the September 2020 edition of Electrical Business Magazine.


A consumer’s service conductors entering a service box that is not equipped with a barrier between the line and load sides shall:


A) enter the service box as close as possible to the line terminals of the main switch or circuit breaker.
B) enter the service box from the bottom.
C) not come into contact with nor cross conductors connected to the load terminals of the main switch or circuit breaker.
D) all of the above.
E) A and C.


Non-locking 15A receptacles in a hospital shall be “hospital-grade” in:

A) Critical care areas only
B) Intermediate and critical care areas only
C) Basic, intermediate and critical care areas
D) The whole building


Solid-state devices are permitted to be used as isolating switches, but not as disconnecting means.

A) True
B) False

ANSWERS Electrical Business, May 2020 ed.


Which Appendix in the CE Code provides guidance on the creation of the Descriptive System Document?

a) B

b) F. Rule 18-002. – CORRECT

c) G

d) H

e) J


Cables containing both Class 2 and power and lighting circuits must be:

a) Marked as approved for the application

b) Intended for the supply and/or control of remote devices associated with the non-Class 2 conductors

c) Insulated for the highest voltage

d) All of the above – CORRECT

e) Both B and C


No point of an ungrounded systems is grounded; instead, the non-current-carrying conductive parts (equipment) of the ungrounded system are grounded.

a) True. Rule 10-400. – CORRECT

b) False

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, esasafe.com.

This article—along with other great content—appears in the June 2020 edition of Electrical Business Magazine.

Print this page


Stories continue below