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160 Cards in this Set
- Front
- Back
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Receptacle outlets in dwelling units shall be installed so that no point along floor line in any wall space is more than ____ |
1800 |
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Recep outlets shall not be counted as part unless located within _____mm from wall |
450 |
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Receptacle outlets at each space that is ____ mm or wider |
300 |
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Recep shall be installed so that no point in wall line is more than ____mm |
1800 |
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Recep shall be located but not more than ____ above counter top |
500 |
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Hallways of ____mm shall have atleast 1 recep |
3000 |
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Show windows 1 recep shall be installed for each ____ lineal meters |
3.6 |
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Recep for appliance shall be installed ____ within the intended location |
1800 |
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Outlets for heavy duty shall have minimum of ____VA per outlet |
600 |
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Signage and lighting shall be computed at minimum of ____VA per branch circuit |
1200 |
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Guest room and hotel shall have not exceed ____V nominal between conductors for lighting fixtures |
230 |
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Electrocution by accident can be prevented by installing ____ |
GFCI |
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Branch circuit larger than ____A shall supply only non lighting loads |
50 |
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The min size for lighting branch circuit conductors shall be ____ mm2 |
2 |
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For branch circuit supplying loads consisting of motor operation utilization equipment that is fastened in place babd that has a motor larger than 1/8 hp in combination with other loads, the total computed load shall be based on ____ percent of the largest motor load plus the sum of the other loads |
125 |
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For 600V nominal or leas open individual conductors shall not be smaller than ____mm2 copper |
8 |
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For over 600V nominal, open conductors shall not be smaller than ____mm2 copper |
14 |
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Service drop and service lateral conductors shall not be smaller than ____mm2 copper |
8 |
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Service drop conductors shall have a minimum vertical clearance of ____mm for sidewalks |
3000 |
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The pt of attachment of the service drop conductors to a building shall not be less than ____mm above finished grade |
3000 |
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Service drop conductors shall not be less than ____mm over driveways |
3600 |
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For installations to supply only limited loads of single branch ckt, the service disconnecting means shall have rating not less than ____A |
30 |
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For family single dwelling, disconnecting means shall have a rating of not less than ____A 3 wire |
60 |
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Plug fuses shall be permitted to be used in ckts not exceeding ____V line to line |
250 |
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A fuse is a ____ device |
1phase protective |
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Factors for fuse rating for protection |
-voltage -branch current -ampacity of branch cond |
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Reason to connect metal enclosures for electrical grounding system |
Current path continuity |
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Ground ring specs |
-depth not less than 750mm -consists at least 6000mm cond -not less than 30mm2 |
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Electeodes of rods of iron or steel shall be at least ____mm diameter |
16 |
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Plate electrodes shall be installed not less than ____ mm below earth surface |
750 |
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Minimun size of grounding electrode conductor |
8mm² |
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At least ____ of free conductor measured from the point in the box where it emerges from its raceway shall be left from its outlet. |
150mm |
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Temporary lighting power and lighting installations shall be permitted for a period of ____ days of christmas lighting |
90 |
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In open wiring on insulators ____mm2 or larger conductors supported on solid knobs shall be securely tied by tie wires |
8 |
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Open wiring insulator shall be separated at least ____mm from metal and any exposed signalling conductors |
50 |
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Maximum number of quarter bend in one run |
3 |
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Radius of bending shall not be less than ____ times diameter of cable |
5 |
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Busways shall be securely supported at intervals not exceeding ____mm |
1500 |
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Receptacle outlet shall be installed within ____mm of outside edge of basin |
900 |
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Fixture never to be installed near closet |
Surface mounted incandescent |
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Data processing system conductor ampacity shall have ____ % of total load |
130 |
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Minimum ampacity for window type AC with 8A rated current |
20 |
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Min ampacity for AC with 12A rated current |
1.25*12= 15A |
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Hermetic compressor multiplier |
1.15* rated current |
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Continuous duty of secondary of wound rotor minimum ampacity |
125% of FL |
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Disconnecting means for motor circuits 600v or less shall have at least ____% of FL ampacity |
115 |
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Maximum overload protection of motor compressor |
140% of FL current |
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Fire resistance of transformer vaults shall last at least ____ |
1 hour |
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Minimum ampacity of capacitor circuit conductor |
135% of Rated current |
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____ hazardous location contain flammable gas or combustible vapor |
Class I |
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____ hazardous location contains combustible dust |
Class II |
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____ location containing ignitable fibers |
Class III |
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Bank,office lighting VA |
28 |
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Dwelling unit lighting VA |
24 |
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Hosp club hotel restaurants lighting VA |
16 |
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Large rooms lighting VA |
12 |
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Assembly hall, churches lighting VA |
8 |
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Hallways lighting VA |
4 |
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Continuous Load |
3 hours |
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Location subject to saturation with water |
Wet location |
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Maximum number of disconnect for service mains |
6 |
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SPUG |
Small Power Utilities Group |
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Static friction is ____ dynamic friction |
Greater than |
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Max number of conductors permitted in wireway at any cross section signal circuit not included |
30 |
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SOLR |
Supplier of Last Resort |
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Grounding conductor larger than ____ shall be identified by a continuous white or gray or by white stripes other than green |
14mm2 |
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Branch circuits shal be rated in accordance to ____ or setting of overcurrent device |
Max permitted ampere rating |
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3phase 4wire system shall be used to supply ____ to suppress harmonic neutral current |
Nonlinear |
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Voltage shall not exceed 600 volts on branch circuits supplying only ballasts for electric discharge lamps in tunnels not less than ____mm |
5500 |
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Allowable efficient voltage drop |
3% |
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Nominal supply voltage for residential |
230VAC |
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Lighting load for specified occupancies , the floor area for each floor shall be calculated ____ from the building |
Outside |
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Vertical clearance above roof level shall be maintained not less than ____mm in all directions from roof edge |
900 |
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If the allowable ampacity is not available, the next higher should be chosen provided that the current does not exceed ____amp |
800 |
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Enclosures for overcurrent devices shall be mounted on ____ position |
Vertical |
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Fuse rated ____ volts shall be permitted or be used for voltages at or lower than them |
600 |
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Not to be grounded |
Electrically operated cranes |
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For service entrance of phase conductors larger than 500mm2 or 850mm2 aluminum, the required grounding shall not be sized less than ____% of the largest |
12.5% |
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Grounding impedance shall be installed between |
Grounded eletctrode and system neutral |
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Rod and pipe electrodes shall not be less than____ length |
2400mm |
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The minimum level for ground service conductors shall be ____volts |
600 |
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Boxes shall be durably marked by the manufacturers with their volume of ____ or less |
1650cm3 |
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____ is a space in the hoistway, intended to be accessed with or without bodily entry, that contains the elevator controller |
Control space |
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Spectral distribution that fluctuates with time |
Flicker |
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Indicative plan for expansion of power generation |
Power Development Plan (PDP) |
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Boxes and fittings shall be ____ in class III division I location |
Dustight |
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Live parts exposed in switchboard shall not be less than ____mm |
760 |
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Grounding electrode connection that is encased in concrete or or directly buried shall |
Not required to be accessible |
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Wire size for swimming pools |
8mm |
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____ switches shall be used for capacitor switching |
Group operated |
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Connection devices or fittings must not connect grounding conductors to equipment by means of |
Solder |
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Not included in PDC |
Ensure distribution system to be operated by one distribution company |
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All wires shall be protected by an approved electrical conduit including ____ conductor |
Grounding |
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Maximum distance between receptacle outlets |
3.6m |
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In the left hand rule, point finger always represent |
Magnetic field |
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In dwelling, the minimum mounting height of outlet above bath tab is ____mm. |
900 |
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What is the rule for disconnection means of a motor is near to the motow protected |
Installation Rule |
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For hermetic motor, what rule is the disconnecting means is 115% of the full load current? |
Wiring design Rule |
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Is the total duration of sustained customer power interruption within a goven period divided by the total number of customer served within the same period. |
SAIDI |
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What is the use of differential relay in relay in power Transformer? |
Detect internal faults |
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A conducting connection, whether intentional or accidental between an electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth. |
Ground |
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Refers to the condition when the loading of trasmission lines or substation equipment or between 90 percent ang 100 percent of the continuous rating. |
Critical loading |
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In philippine grid code, large generator has an aggregate capacity in excess of ____MW |
20MW |
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Long duration voltage variation is a variation of the rms value of the value of the voltage from nominal voltage for a time greater than____ |
1 min |
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The maximum voltage unbalance factor for zero and negative sequence os _____% diring normal operating condition. |
1 % |
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The grid shall be considered at normal state when the frequency is within limits of ____ and ____. |
59.7Hz & 60.3Hz |
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Short duration voltage variation of the rms value of the voltage from its nominal value for a time greater that _____ of the power frequency but not exceeding one minute. |
1/2cycle |
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Premises wiring shall not be electrically connected to supply system unless it contains |
A grounded conductor |
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A grounded conductor of a mineral insulated, metal sheathed cable shall be identified at the time of installation by ____ markin at its termination |
Distinctive |
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Grounded conductor larger than 14mm2 shall be identified by ____ at its termination |
White or gray |
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Which of the following is not a standard classification for a branch circuit supplying several loads |
25 |
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Multiwire branch circuit shall supply only _____ |
Line to neutral loads |
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The feeder conductor ampacity shall not be less than that of the service entrance conductors with ampacity of ____ or less |
55A |
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Voltage drop on both feeders and branch circuit to the farthest outlet shall not exceed |
5% |
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Allowble voltage drop from farthest outlet to the lighting panel |
3% |
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Allowable voltage drop from MDP to farthest outlet |
2% |
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Where computations in a fraction of an ampere that is less than ____, such fractions can be dropped |
0.5 |
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Open conductors on insulators shall be covered when they are within ____mm from building |
3000 |
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Power conductors shall maintain distance of ____mm from communication conductors |
750mm |
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Overcurrent devices shall not be located near easily ignitable material such as |
Closets |
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Fuses or circuit breakers shall be connected in ____ with each ungrounded conductor |
Series |
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Single phase 3 wire , the ___ conductor is to be grounded |
Neutral |
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Main bonding jumper and system bonding jumper shall be a ____ material |
Corrossion resistant |
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A metal underground pipe in direct contact with earth for ____mm or more can be used as ground |
3000 |
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Conductor ____mm or larger shall be stranded |
8.00 |
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___mm or larger shall be permitted to be connected in parallel |
50 |
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Generating plant isolated from rest of the grid but capable of maintaning stable power |
Island grid |
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Has exclusive franchise to operate distribution system |
Distribution utility |
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Where installed in two or more raceways, the size of the grounded in each raceway shall not be smaller than ____ |
50mm² |
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A ground ring encircling the building or structure, in direct contact with the earth, consisting of at least 6000mm bare copper not smaller than |
30mm² |
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Bonding jumper from grounding electrodes shall be permitted to be connected to an aluminum or copper not less than |
6mm x 50mm |
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Minimum size of copper bonding jumper for a service raceway containing 100mm² is |
22mm² |
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For multi grounded neutral system, the maximum distance between any two adjacent electrodes shall not be more than ____ meters |
400 |
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Grounding conductors not an integral part of a cable assembly shall not be smaller than ____ mm² copper |
14 |
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Size of wire for pools |
8.0mm² |
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Ground ring in direct contact in the earth shall not be smaller than ___mm² |
30 |
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Example of a system permitted to be grounded is a corner-grounded____ transformer connection |
Delta |
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A run of flexible metal conduit may be used as an equipment grounding conductor if the circuit overcurrent device is |
20A or less |
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The neutral conductor shall be sufficient ampacity but not less than ____% of phase conductors |
33 |
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Type use service entrance may have a ____ concentric conductor applied and not required an outer overall covering |
Bare copper |
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Connected to ground without inserting any resistor |
Grounded solidly |
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In rigid metal wiring conduit, the minimum electrical trade size is: |
15mm |
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Conductors must have a clearance from windows, porches, fire escapes of not less than |
1000mm |
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Ground ring |
6000mm length 300mm² |
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Bonding jumper |
6mm x 50mm |
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Minimum bonding jumper for 100mm² THHN aluminum |
22mm² |
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Maximum distance between two adjacent ground electrodes |
400 |
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Hardness |
Boron Chromium Nickel |
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Chromium in alloying |
Corrosion resistance |
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Manganese |
Brittleness and hardness |
|
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Molybdenum in alloying |
High temperature strength and hardness |
|
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Nickel in alloying |
Toughness, hardness, reduce thermal expansion, corrosion resistance |
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Silicon in alloying |
Strength, spring steel strength, improve magnetic properties |
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Sulfur in alloying |
Brittleness and machinability |
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In construction steel, chromium is used as |
Hardener |
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Ingot iron has maximum of 0.15% total impurities |
True |
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Group of Air-hardened |
Group A |
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Group of steel for cold working |
Group D |
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Group of hot work steel |
Group H |
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Equipment grounding conductor of a branch circuit shall be identified by color |
Green |
