Electrical Business

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Code Conundrum February 2020

February 28, 2020 | By Ray Yousef

Tackle the code conundrum if you dare!

Answers to this month’s questions will appear in the April issue of Electrical Business.

Question 1

A totally enclosed non-ventilated Class B motor requires conductors rated at 38 A. The minimum size copper multi-conductor cable can be used is:


a) 10 AWG TECK90

b) 8 AWG TECK90

c) 8 AWG TW75

d) 6 AWG TW75

Question 2

A disconnect for luminaires with double ended lamps operating at 120 volts is required for:

a) Luminaires with a ballast

b) Luminaires with a ballast and LED lamps

c) Luminaires with a driver and LED lamps

d) All of the above

e) None of the above

Question 3

For a single dwelling unit with 100 A breaker using No. 3 AWG Copper service conductors, is the marking required based on Rule 4-004 22) and Table 39?


b) No


ANSWERS Electrical Business, December 2019

Question 1

A combination Arc Fault Circuit Interrupter provides:

d) Protections for both series and parallel arcing faults. Rule 26-650, CE Code 2018.

Question 2

The integrity of an impedance grounded system shall be monitored, and the system shall have an audible or visual alarm if there is:

d) All of the above. Rule 10-302, CE Code 2018.

Question 3

Raceways which are less than 2 m above grade and subject to mechanical damage shall:

d) Any of the above. Rule 12-934, CE Code 2018.


How did YOU do?   

3 • Seasoned journeyman              2 •Need refresher training

1 • Apprentice 0 • Just here for fun!

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