July 7, 2016 – Test your CE Code knowledge with the July 2016 instalment of the Code Conundrum!

QUESTION 1
Where the DC arc fault protection is not located at the photovoltaic module, mechanical protection is required for PV source circuit conductors installed on or above buildings to protect against rodent damage.

a) True
b) False

QUESTION 2
In buildings for residential occupancy, two or more heating fixtures are permitted to be connected to a branch circuit used for space heating, provided that the branch circuit overcurrent devices are rated not more than ___ .

a) 15A
b) 20A
c) 30A
d) 40A

QUESTION 3
When installed receptacles of configuration 5-20RA are exposed to the weather and facing downward (at an angle of 45 degrees or less from the horizontal), cover plates marked “Wet Location Only When Cover Closed” are required.

a) True
b) False

Answers to these questions next month. Meantime, here are the answers to the June 2016 Code Conundrum:

Question 1
The CE Code allows the use of non-metallic sheathed cable in a building of combustible construction.

a) True. Rule 12-504.

Question 2
Receptacles having CSA configurations 5-15R or 5-20R installed in buildings under construction:

d) all of the above. Rules 76-012 and 76-016.

Question 3
Can an insulated #6AWG wire be marked in a permanent manner with a green colour so as to be used as a bonding wire?

b) No. Rule 4-038.

HOW DID YOU DO?

• 3/3 = Master Electrician
• 2/3 = Journeyman
• 1/3 = Apprentice
• 0/3 = Plumber?!?

The Code Conundrum is compiled by Ray Yousef of Ontario’s Electrical Safety Authority.

N.B. Always consult your AHJ for more specific interpretations.

* This article also appears in the July 2016 edition of Electrical Business Magazine. Check out our ARCHIVE page for back issues.