Codes & Standards
Code Conundrum October 2016 • Ray Yousef
October 11, 2016 By Ray Yousef
October 11, 2016 – Our monthly code conundrum is a fun way to see how your code knowledge is doing!
Class H fuses can be used for overcurrent protection in places where circuit overload protection is provided by other means.
The maximum voltage for a Class 2 circuit is:
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
b) Class I, zone 2
c) Class II, Division 1
d) Class II, Division 2
Answers to these questions next month. Meantime, here are the answers to the September 2016 Code Conundrum:
The metal assembly of a raised floor in a computer room must be bonded with a copper conductor to form an effective equipotential plan.
d) #6AWG. Rule 10-406(7).
The CE Code allows two supply services of the same voltage (from the same system of any supply authority) to enter a building, if one will only be used for supplying a fire pump.
a) True. Rule 6-102(1).
If a service switch is marked for continuous operation at 100%—and is supplied by single conductor cable in free air—what is the maximum continuous load?
c) 85%. Rule 8-104(5).
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 October 2016 edition of Electrical Business Magazine. Check out our ARCHIVE page for back issues.
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