Electrical Business

Articles Features Articles Code Conundrum Codes & Standards

Code Conundrum April 2024

April 30, 2024 | By Ray Yousef


Tackle the Code Conundrum... if you dare!


April 30, 2024 – Welcome to the newest round of questions that test your knowledge of the CE Code-Part I. Answers will appear in the June 2024 edition of Electrical Business Magazine, and online at EBMag.com.


QUESTION 1 – 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 2 – 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

QUESTION 3 – Class H fuses are permitted to be used for overcurrent protection where circuit overload protection is provided by other means.

a) True
b) False

Advertisement

ANSWERS to Code Conundrum, February 2024 edition.

QUESTION 1 – What is the maximum allowable ampacity for a #6AWG T90 Nylon run in conduit containing 6 #6AWG T90 Nylon, 12 #14AWG TWU75 and 7 #12AWG TW75?

a) 65 A
b) 55 A
c) 39 A
d) 33 A. Rule 4-004(13)(14).

QUESTION 2 – Areas where paint finishes are regularly applied by spraying and there is adequate ventilation, the interior of spray booths—and their exhaust ducts—are considered:

a) Zone 0
b) Zone 1. Rule 20-302(1).
c) Zone 2
d) Zone 20

QUESTION 3 – When receptacles in a trailer park are mounted vertically, the CE Code requires the U-ground slot to be:

a) At the top. Rule 72-110(3).
b) At the bottom


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.


Print this page

Advertisement

Stories continue below