PEC NQS 2017
TRUE
(True or False) A separate overcurrent device shall not be required for a capacitor connected on the load side of a motor overload protective device.
14 mm²**
A bonding jumper not smaller than _______ mm² copper or equivalent shall be connected between the community antenna television system's grounding electrode and the power grounding electrode system at the building or structure served where separate electrodes are used.
15,061.31 A
Calculate the maximum symmetrical fault current than would be supplied through a three phase distribution transformer rated at 300 kVA, 230 volts if its impedance is 5%. Assuming that the primary source is of infinite capacity and neglecting all other impedances.
6 switches, 6 sets
Each PV system disconnecting means shall consist of not more than ___ switches or ___ sets of circuit breakers mounted in a single enclosure, or in a group of separate enclosures.
50 m²*
For a dwelling unit having a floor area of not more than ______ square meters with a total load not exceeding 3680 VA, a drawing sheet of size 297 mm × 420 mm or A3 size is permitted.
144.5 A
Four squirrel cage induction motors: 10-HP with an FLC of 28 amperes, 7 1/2 -HP with an FLC of 22 amperes, and two 15-HP with an FLC of 42 amperes, all rated at 230 volts, 3-phase, 60 Hz are to be served by a feeder circuit. Ambient temperature does not exceed 30°C. What is the net computed current to be used for determining the size of the feeder conductors?
16 VA/m²
In general lighting load calculations, what is the VA/m2 for restaurants?
3700 mm**
Lamps and lampholders for fixed lighting that is located over lanes through which vehicles are commonly driven or that may otherwise be exposed to physical damage shall be located not less than _____ mm above floor level, unless of the totally enclosed type or constructed so as to prevent escape of sparks or hot metal particles.
135%**
The ampacity of capacitor circuit conductors shall not be less than ______ percent of the rated current of the capacitor.
762 mm**
The disconnecting means for shore power connection shall be readily accessible, located not more than _____ mm from the receptacle it controls, and shall be located in the supply circuit ahead of the receptacle.
135%**
The maximum photovoltaic source circuit currents current shall be calculated by the sum of parallel-connected PV module-rated short-circuit currents multiplied by ______ percent.
C. or D.
The rating or setting of the overcurrent protective device for the circuit supplying the industrial control panel shall not be greater than provided with the industrial control panel, plus 125 percent of the full-load current rating of all resistance heating loads, plus the sum of the full-load currents of all other motors and apparatus that could be in operation at the same time. A. the ampacity of the supply conductor B. the ampacity of the conductors from the controller C. the sum of the largest setting of the branch-circuit short-circuit and ground-fault protective device provided with the industrial control panel D. the sum of the largest rating of the branch-circuit short-circuit and ground-fault protective device provided with the industrial control panel
50%**
The total marked rating of a cord- and attachment-plug-connected room air conditioner shall not exceed ______ percent of the rating of a branch circuit where lighting outlets, other appliances, or general-use receptacles are also supplied.
24 VA/m²
What is the general lighting load in VA/m2 for dwelling units?
60°C
What is the operating temperature of TW conductor?
125%, 250%**
Where the phase converter supplies specific fixed loads, and the conductor ampacity is less than _______ percent of the phase converter nameplate single-phase input full-load amperes, the conductors shall have an ampacity not less than _______ percent of the sum of the full-load, 3-phase current rating of the motors and other loads served where the input and output voltages of the phase converter are identical