Electrical Business

Code conundrum May 2017 • Ray Yousef

May 26, 2017
May 26, 2017
By Ray Yousef


May 26, 2017 – The May Code Conundrum will help you brush up on your code knowledge!

For hotels, the minimum ampacity for service or feeder conductors shall be based on a basic load of ___ W/m2, plus other lighting loads for special areas, as well as heating and A/C loads.

a) 15    c) 30
b) 20    d) 50

In adequately ventilated areas where paint finishes are regularly sprayed, the interiors of spray booths and their exhaust ducts are considered:


a) Class I, Zone 1    c) Class II, Div. 1
b) Class I, Zone 2    d) Class II, Div. 2

In basic care areas, and areas routinely cleaned with liquids that splash against the walls, receptacles shall be installed not less than___ mm above the floor.

a) Class I, Zone 1    c) Class II, Div. 1
b) Class I, Zone 2    d) Class II, Div. 2

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

Question 1
When receptacles are mounted vertically in a trailer park, the CE Code requires the U-ground slot to be:

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

Question 2
For a mobile home, the minimum permitted size conductor for the power supply cord is:

c) #6 AWG. Rule 70-108(4)(a).

Question 3
Does the CE Code permit a #6AWG system grounding conductor, which is free from exposure to mechanical injury, to run exposed along the surface of a building if it is rigidly stapled to the construction?

a) Yes. Rule 10-806(2).


• 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 May 2017 edition of Electrical Business Magazine. Check out our ARCHIVE page for back issues.

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