Code Conundrum May 2019

Ray Yousef
May 13, 2019
By Ray Yousef
May 13, 2019 - Tackle the Code Conundrum if you dare!

Question 1
Each vehicle space in a carport or garage is required to have:
a) One receptacle located in each vehicle space.
b) One receptacle for each vehicle space, readily accessible.
c) One receptacle for each vehicle space, readily accessible and GFCI protected.
d) One receptacle for each vehicle space located on the ceiling for a future garage door operator.
e) All of the above.

Question 2
Rapid shutdown is required for photovoltaic (PV) systems on or in buildings where the PV source or output conductors are:
a) More than 1.5 m from the array with shutdown within 10 seconds.
b) More than 1.5 metres from the array with shutdown within 30 seconds.
c) More than 1 metre from the array with shutdown within 10 seconds.
d) More than 1 metre from the array with shutdown within 30 seconds.
c) n/a: Rapid shutdown is not required.

Question 3
True or false: equipment marked Ex ia Gb is suitable for installation in Zone 0 location.
a) True.
b) False.

Answers to this month’s questions will appear in the June 2019 issue of Electrical Business. In the meantime, here are the answers to the April 2019 Code Conundrum:



Question 1
TC-ER cables may transition exposed between cable trays:
d) B & C: Up to 1.5 m when not supported / Up to 7.5 m when supported. Rule 12-2202, CE Code 2018.

Question 2
When metal enclosed high-voltage equipment is installed in an electrical room, which of the following—within the electrical room—is to be grounded to the station ground electrode?
e) None of the above. Rule 36-308, CE Code 2018.

Question 3
True or false: An identified conductor is required at a switch controlling a receptacle used for lighting in a living room or sleeping room.
b) False. Rule 4-022 2), CE Code 2018.

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 (ESA). For more information, visit www.esasafe.com.

This column originally appeared in the May 2019 issue of Electrical Business magazine.

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