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WorksheetsCommercial Wiring Chp.1 Quiz
Total questions: 10
Worksheet time: 5mins
The open-circuit voltage between the two terminals of a single-pole switch on a lighting circuit when the switch is in the OFF position is
a. zero
b. 60 volts
c. 120 volts
d. 240 volts
An arc flash can produce temperatures of
a. 3,500
b. 15,000
c. 25,000
d. 35,000
For safety, it is very important that electrical equipment be “listed" by the
a. NEC
b. OSHA
c. NRTL
d. ANSI
Footwear suitable for electrical work is marked with the letters
a. CF
b. EH
c. OSHA
d. PPE
The National Electrical Code is revised every years so as to be as up to date as possible.
a. two
b. three
c. four
d. five
The term approved means to be
a. listed by a Nationally Recognized Testing Laboratory (NRTL)
b. acceptable to the National Electrical Code
c. acceptable to the architect or engineer designing the job
d. acceptable to the authority having jurisdiction
As defined in Article 100, a dwelling unit has the following feature(s):
a. permanent provisions for living, sleeping, cooking, and sanitation
b. living, sleeping, and basement or storage areas
c. space for eating, sleeping, and recreation
d. optional garage space
All measurements in the National Electrical Code are shown in which system(s) of units?
a. inch-pound (English) only
b. SI (metric) only
c. both inch-pound and metric values
d. both natural units and physical units
In the international system of units, the prefix kilo- means
a. hundred
b. thousand
c. million
d. billion
In the international system of units, the prefix milli- means
a. one hundredth
b. one thousandth
c. one millionth
d. one billionth
