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Code Conundrum September 2018 • Ray Yousef

September 27, 2018 | By Ray Yousef

September 27, 2018 — Tackle September’s Code Conundrum…if you dare!

Where is it permitted to install electrical non-metallic tubing (ENT)?

a) Underground with mechanical protection
b) Behind drywall
c) On building surfaces
d) All of the above

Except for receptacles located in bathrooms or washrooms, all 15 A and 20 A non-locking receptacles in a patient care area are required to be hospital-grade.


a) True
b) False

For a retail store, the calculated load for service or feeder conductors shall be based on a basic load of ________ W/m2 of the area of the building, plus other special lighting equipment, heating and air-conditioning loads.

a) 15
b) 20
c) 30
d) 50

Answers to this month’s questions will appear in October’s Electrical Business. Meantime, here are the answers to the July/August Code Conundrum!

Question 1
The interior of a storage tank that is vented to atmosphere and contains flammable liquids stored above their flashpoint is typically classified as:

a) Zone 0. Rule 18-006, Appendix B, CE Code 2018.

Question 2
Permanent climbing steps shall be provided where it is necessary to climb an outdoor floodlighting pole to replace lamps. The lowest step shall not be less than ___ above locations accessible to unauthorized persons.

d) 3.7 m. Rule 30-1030, CE Code 2018.

Question 3
Fire alarm system conductors are permitted to be installed in electrical non-metallic tubing (ENT) only when embedded in at least 50 mm of masonry or poured concrete.

a) True. Rule 32-102(1)(d), CE Code 2018.

How did YOU do?

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

This article originally appeared in the September 2018 issue of Electrical Business Magazine.

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