Electrical Business

Features Code Conundrum Codes & Standards
Code Conundrum November 2016 • Ray Yousef


November 9, 2016
By Ray Yousef

Topics

November 9, 2016 – Up to code? Test yourself with our monthly Code Conundrum!


QUESTION
 1
When a service switch is marked for continuous operation at 100% and is supplied by multi-conductor cable, what is the maximum continuous load permitted?

a) 100%  
b) 80%
c) 85%   
d) 70%

QUESTION 2
What is the minimum size copper bonding conductor that can be secured to the surface on which it is carried (with mechanical protection)?
    
a) 10 AWG   
b) 6 AWG
c) 4 AWG
d) 2/0 AWG

Advertisment

QUESTION 3
A 5-15R receptacle mounted outdoors at 750mm above finished grade requires a cover plate:

a) suitable for wet location, whether a plug is inserted into the receptacle or not
b) marked “Extra Duty”
c) marked “Wet Location Only When Cover Closed”
d) A and B
e) B and C

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

Question 1
Class H fuses can be used for overcurrent protection in places where circuit overload protection is provided by other means.

b) False. Rule 14-212.

Question 2
The maximum voltage for a Class 2 circuit is:

d) 150V. Rule 16-200.

Question 3
The space within 6m (horizontally in any direction) from dip tanks and their drain boards, and extending to a height of 1m above the tank, is considered:

a) Class I, zone 1. Rule 20-302.

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 November 2016 edition of Electrical Business Magazine. Check out our ARCHIVE page for back issues.



learning curve Sponsored Content
Post your tech sheets, white papers, new technology etc. Contact Anthony Capkun