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Code Conundrum
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Code Conundrum February 2020
February 28, 2020 | By Ray Yousef
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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?
a)Yes
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?  Â
3 • Seasoned journeyman             2 •Need refresher training
1 • Apprentice 0 • Just here for fun!
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