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Code Conundrum December 2018


December 12, 2018
By Ray Yousef

Topics

December 11, 2018 – Tackle December’s Code Conundrum … if you dare!
 

Question 1

Fuses permitted to be used for overcurrent protection, where circuit overload protection is provided by other means, are:
A) Class C fuses.
B) HRCII-MISC fuses.
C) Class H fuses.
D) A & B.
 
Question 2

Does the CE Code allow 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) Yes.
B) No.
 
Question 3

Rigid main contact conductors for an electrical hoist shall be supported so there is an air space of not less than _____ between conductors.
A) 16 mm.
B) 21 mm.
C) 25 mm.
D) 35 mm.

Answers to this month’s questions will appear in the February 2019 issue of Electrical Business. Meanwhile, here are the answers to the October Code Conundrum:


Question 1

For a mobile home, the minimum length of #6 AWG power supply cord, measured from the attachment plug to the point of entrance to the unit, is:
d) 7.5 m. Rule 70-108, CE Code 2018

Question 2

When communication flat cable (CFC) type wiring is used, it shall be covered with abrasion-resistant tape and secured to the floor, so all cables, corners and bare conductor ends are completely covered.
a) True. Rule 60-328, CE Code 2018

Question 3

What size of tap conductor is required to connect a metal fence around an outdoor substation to the station ground electrode?
b) 2/0 AWG. Rule 36-312, CE Code 2018

How did YOU do?

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



This column originally appeared in the December 2018 issue of Electrical Business.