Exam (elaborations)
Commercial 1 Wiring Final (1)
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Commercial 1 Wiring Final (1)
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Commercial 1 Wiring Final60 degrees C - ANS-For equipment rated at 100 amperes or less, the ampacity values found in
the ____ column of NEC® Table 310.16 are generally to be used.
Panelboard - ANS-____ schedules are typically provided to detail the circuits and overcurrent
protection required for distribution equipment.
UL - ANS-Which nonprofit organization publishes the Electrical Appliances and Utilization
Equipment Directory (Orange Book)?
35,000 - ANS-On large electrical installations, an arc flash can generate temperatures of ____
degrees F.
twenty-five - ANS-The receptacle outlet for servicing air conditioning equipment is required to be
located on the same level as the HVAC equipment and within ____ feet of the equipment.
single-pole - ANS-A switch symbol without a number beneath the horizontal line means that a
____ switch should be installed.
- ANS-The purpose of a(n) ____ device is to protect the circuit wiring and devices and to some
extent the equipment served by the circuit.
overcurrent protection - ANS-Which is an example of a continuous load?
a single cover - ANS-If more than one symbol is located immediately adjacent to another, it
usually means that a multigang box for multiple wiring devices and ____ are to be installed.
Notice to Bidders - ANS-Which item in the General Clauses and Conditions is of value to the
contractor and his estimator only?
qualified person - ANS-The NEC® defines a(n) ____ as one who has skills and knowledge
related to the construction and operation of the electrical equipment and installations and has
received safety training to recognize and avoid the hazards involved.
24 - ANS-The switches used in the low-voltage remote-control system described in this chapter
operate on ____ volts.
125 - ANS-When sizing conductors and overcurrent protection, you must take 100 percent of
the noncontinuous loads plus ____ percent of the continuous loads.
, circle - ANS-When raceways are installed vertically in the building, from one floor to another, the
vertical direction may be represented by the arrow symbol inside a(n) ____.
horizontally mounted - ANS-The typical outlet notation "H" designates a ____ outlet.
kilo- - ANS-In the metric system, what is the prefix for 1000?
industrial - ANS-Multioutlet branch-circuit ratings are limited to 15-, 20-, 30-, 40-, and 50-ampere
except on ____ premises, where they may have a higher rating.
multiware - ANS-What type of branch circuit has two or more ungrounded conductors that have
a voltage between them, and a grounded conductor that is connected to the neutral or grounded
conductor of the system, with equal voltage between it and each ungrounded conductor of the
circuit?
underfloor signal raceway - ANS-A dashed line with an "S" designates a(n) ____.
continuous - ANS-If the load is a water heater with capacity of 120 gallons (450 L) or less, the
branch circuit is required to be included as a(n) ____ load
multiware - ANS-What type of branch circuit is meant by a shared-neutral branch circuit?
three - ANS-Adjustment factors must be used if more than ____ conductors are grouped
together in a conduit or cable without maintaining spacing.
heating, refrigerating and air-conditioning - ANS-The ASHRAE Handbook is considered the
Bible of the ____ industry, much like the NEC® is to the electrical industry.
arcblast - ANS-Allowing metal shavings from a drilling operation to fall onto live parts of
electrical equipment generally results in a(n) ____, which can cause deadly burns.
curved lines - ANS-When concealed raceways are drawn on plans, they usually are shown as
____.
distribution panel - ANS-A rectangle with parallel diagonal lines as the fill pattern represents a
____.
conductor size - ANS-What does AWG measure?
do not stand in front - ANS-When turning a standard disconnect switch on, ____ of the switch.
anyone - ANS-Who may submit a proposal to change the NEC® using the Proposal Form found
in the back of the NEC®?
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