Electrical Business

Uncategorized Code Conundrum

Code Conundrum May 2020

May 9, 2020 | By Ray Yousef

Tackle the Code Conundrum… if you dare!

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


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


a) B

b) F

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

e) Both B and C


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

a) True

b) False


ANSWERS from April 2020 edition.

Question 1

When only 4 conductors of an 8-conductor cable (not marked LP) are used for power, the ampacities obtained from Table 60 must be multiplied by:

a) 0.5

b) 1

c) 1.4. Ref. 16-330 3) – Correct

d) 2

e) None of the above

Question 2

The ampacity of an approved cable bus assembly is determined from:

a) A Section 4 ampacity calculation

b) The ampacity on the product label – Correct

c) A certified test report from the cable bus manufacturer

d) A and C

e) A and B

Question 3

A bonding connection is required for any device having a bonding terminal and mounted on a non-metallic outlet box.

a) True – Correct

b) False

About the author…

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

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

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