July 5, 2023 – Welcome to the newest round of questions that test your knowledge of the CE Code-Part I. Answers will appear in the Summer 2023 edition of Electrical Business Magazine, and online at EBMag.com under Features.

QUESTION 1 – When a PV recombiner is more than 7.5 metres from the inverter, the disconnect:

a) Shall be rated to interrupt the load
b) Shall be installed within 2 metres of the recombiner
c) May be integral with the recombiner
d) All of the above
e) Is not required

QUESTION 2 – The ampacity of a communication cable marked “-LP” is determined by:

a) Table 60
b) The ampacity marked on the cable
c) A qualified person
d) Any of the above

QUESTION 3 – Raceways that are less than 2 metres above grade and subject to mechanical damage shall:

a) Be of rigid steel type
b) Protected by location
c) Protected by steel guards (min. 10 MSG), secured in place
d) Any of the above

ANSWERS to Code Conundrum, April 2023 edition

QUESTION 1 – When a two-conductor NMS cable is used for a switch loop, does the CE 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. Rule 4-030(2).

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. Rule 20-302.
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. Rule 52-004(3).
d) Extra-hard usage

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.

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