CHAPTER 2 PINAKAFINAL
THE DEMAND FACTOR (%) FORMULA FOR ELECTRIC CLOTHES DRYERS RANGING NUMBERS 24-42.
%=35-(0.5(NUMBER OF DRYERS - 23))
THIS ARTICLE PROVIDE REQUIREMENTS FOR THE FOLLOWING: ENUMERATE THE 3.
(1) IDENTIFICATION OF TERMINALS; (2) GROUNDED CONDUCTORS IN PREMISES WIRING SYSTEMS; (3) IDENTIFICATION OF GROUNDED CONDUCTORS.
Bare copper conductors shall be permitted to be used for the neutral conductor. Give 2.
(1) Service-entrance conductors, (2) Service laterals or underground service conductors, (3) Direct-buried portions of feeders
THE GROUNDING IMPEDANCE SHALL COMPLY WITH THE BOTH OF THE FOLLOWING; GIVE ONLY ONE.
(1) THE NEUTRAL CONDUCTOR SHALL BE IDENTIFIED or (2) THE NEUTRAL CONDUCTOR SHALL BE INSULATED FOR THE MAXIMUM NEUTRAL VOLTAGE.
A 14 mm2 or larger copper or aluminum grounding electrode conductor exposed to physical damage shall be protected in, what conduits/metallic tubing? Give 3.
(1) rigid metal conduit (RMC), (2) intermediate metal conduit (IMC), (3) rigid polyvinyl chloride conduit (PVC), (4) reinforced thermosetting resin conduit Type XW (RTRC-XW), (5) electrical metallic tubing (EMT), or (6) cable armor.
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Fuses shall be plainly marked, either by printing on the fuse barrel or by a label attached to the barrel showing the following: Give at least 2
1. Ampere rating 2. Voltage rating 3. Interrupting rating where other than 10,000 amperes 4. Current limiting where applicable 5. The name or trademark of the manufacturer
For dwelling units more than 150sqm floor area, the feeder and service loads shall be calculated with ____percent demand factor for ACU and lighting loads.
100%
Surge protective devices(SPDs) shall not be installed in a circuit rated over _____V.
1000V
Name at least 5 nominal system voltages that shall be used for purposes of calculating branch-circuit and feeder loads.
115 volts, 115/230 volts, 208Y/120 volts, 230 volts, 380 volts, 400Y/230 volts, 460Y/265 volts, 460 volts, 660Y/380 volts, and 660 volts
The minimum feeder-circuit conductor size, before the application of any adjustment or correction factors, shall have an allowable ampacity not less than the noncontinuous load plus _______.
125 percent of the continuous load
The conductors connected to the surge arrester shall not be smaller than ____mm2 copper or aluminum
14mm2
For installations to supply only limited loads of a single branch circuit, the service disconnecting means shall have a rating of not less than ______.
15 amperes
Give at least 5 Standard Ampere Ratings provided by PEC.
15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 1000, 1200, 1600, 2000, 2500, 3000, 4000, 5000, and 6000 amperes
Appliance receptacles installed in a dwelling unit for specific appliance shall be installed within ____mm of the intended location of the appliance.
1800mm Page 46
Clearance from Conductors or Live Parts from Building walls, projections, and windows shall have a horizontal measurement of ____.
2.3 meters
Additional feeders or branch circuits shall be permitted where the capacity requirements are in excess of ________ at a supply voltage of ____________ or less.
2000 amperes, 1000 volts
In dwelling units and guestroom or guest suites of hotels, motels and similar occupancies, the voltage shall not exceed_____
230V
Rod and Pipe electrodes permitted for grounding shall not be less than ____mm in length.
2400mm
Rod and pipe electrodes shall not be less than ____ in length.
2400mm
For circuits of over _____ to ground, the electrical continuity of metal raceways and cables with metal sheaths that contain any conductor other than service conductors shall be ensured by one or more of the methods specified for services.
250 volts
Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment when the Automatic Overcurrent Device in Circuit Ahead of Equipment is rated at 20 ampere.
3.5 mm2 for copper, 5.5mm2 for copper aluminum.
Overhead conductors for festoon lighting shall not be smaller than _______ unless the conductors are supported by messenger wires.
3.5mm2(2.0 mm dia.)
If a ground is driven from the basement floor level, it shall be in contact with earth for a distance of ____________.
3000 mm
Vertical clearance for overhead service conductors in residential areas, driveways, and commercial areas not subjected to traffic with a voltage not exceeding 300V
3700mm
Remainder loads in a dwelling unit is computed with ____ percent demand factor.
40%
The clearance for overhead conductors for those areas listed in the 3700mm classification where the voltage exceeds 300 volts to ground.
4500mm
The height of air terminals above the stacks shall be not less than __ nor more than __.
460 mm, 760 mm
Conductors supported on poles over public streets, alleys, roads, parking areas subject to truck traffic, driveways on other than residential property, and other land traversed by vehicles, such as cultivated, grazing, forest, and orchard shall have a horizontal climbing space not less than ______.
5 500 mm
Receptacle shall be located on or above, but not more than ___mm above the countertop or work surface.
500mm
Vertical Clearance for Overhead Service Conductors over public streets, alleys, roads, parking areas subject to truck traffic, driveways on other than residential property, and other land such as cultivated, grazing, forest, and orchard.
5500mm
For a one-family dwelling, the feeder disconnecting means shall have a rating of not less than ____.
60 amperes, 3-wire
A two wire Direct current system operating between ______V shall be grounded.
60-300 DCV
Outlets for heavy-duty lampholders shall be calculated at a minimum of ___.
600 volt-amperes
For, show-window lighting, a load of not less than _____ shall be included for a show window , measured horizontally base.
600 volt-amperes/ linear meter
The minimum insulation level of for neutral conductors of solidly grounded systems shall be ___.
600 volts
What is the minimum insulation level for neutral conductors of solidly grounded systems?
600 volts
What is the highest standard ampere rating for fuse and inverse time breakers?
6000A
The grounding electrode conductor for a dc system shall meet the sizing requirements in this section but shall not be required to be larger than __________ or __________.
80 mm2 copper, 125 mm2 aluminum
What is the demand factor (in percentage) when there are four units of kitchen equipment?
80%
The size of a DC system grounding electrode conductor shall not be larger than ______mm2 copper and _____mm2 aluminum
80mm2(copper) and 125mm2 (aluminum)
How much is the demand factor (%) for 5 Household Electric Clothes Dryers?
85%
Splices in conductors shall be as few as practice and shall be attached so as to withstand a pull test of ___.
890N
Minimum size of Overhead and underground service conductor shall not be smaller than ____mm2 copper and ___mm2 aluminum or copper clad aluminum.
8mm2 and 14mm2
A DEVICE CAPABLE TO DRAWING LIGHTNING DISCHARGE TO IT IN PREFERENCE TO VULNERABLE PARTS OF THE PROTECTED AREA.
AIR TERMINAL
After the substation installation is completed, on all assemblies, equipment, conductors, control and protective systems, this test shall be performed in order to verify the integrity of all the systems.
Acceptance Test
A device capable to drawing lightning discharge to it in preference to vulnerable parts of the protected area.
Air Terminal
A device capable to drawing lightning discharge to it in preference to vulnerable parts of the protected area. It may consist of a pointed, solid, or tubular rod or one with special design and material provided with a mounting base having a proper conductor connection.
Air Terminal
Each fuse, fuseholder, and adapters shall be marked with its ___.
Ampere Rating
Radio and television masts of metal, located on a protected building?
Antennas
______ shall be trip free and capable of being closed and opened by manual operation.
Circuit Breakers
All conductors, fittings, and fixture necessary to protect ordinary buildings and structures not exceeding 23 meters in height.
Class I Materials
This shall be the material used in main bonding jumpers and system bonding jumpers.
Copper or Other Corrosion Resistant Material
What kind of material should fastener be made out of?
Copper or copper-bronze alloy
The main bonding jumpers and system bonding jumpers shall be of copper or other material resistant to _____.
Corrosion
This type of clamp and splicers shall not be used in a Class II installations
Crimp type
____ shall be available to those authorized to design, install, operate, or inspect the installation as to the location of the fuses.
Documentation
Electrical systems that are grounded shall be connected to ______ in a manner that will limit the voltage imposed by lightning.
Earth
The bonding jumper for a grounding electrode conductor raceway or cable armor shall be the same size or larger than the ___.
Enclosed Grounding Electrode Conductor
SHALL BE PERMITTED TO BE TAPPED TO THE BRANCH-CIRCUIT CONDUCTOR OF A BRANCH CIRCUIT.
FIXTURE WIRE
It refers to the vapors given from a flammable liquid at or above its flash point.
Flammable Vapors
An insulated conductor that is intended for use as a grounded conductor.
Flexible Cords
It is designed for and listed as providing satisfactory ground continuity between the box and the device.
Floor Boxes
Individually insulated equipment grounding conductors shall have an outer finish of either _____________ color.
Green or Green with one or more yellow stripes
Permitted ungrounded AC systems operating at a voltage between 115v-1000v must have a _____ installed in the system.
Ground detector
In a multiple separate system having a common grounding electrode, a ______ shall be installed in each separate system to the common grounding electrode conductor.
Grounding electrode conductor tap
What is IBT?
Intersystem Bonding Termination
It is installed for the reduction of electrical noise (electromagnetic interference) on the grounding circuit.
Isolated Grounding Circuits
It is a complete system of air terminals, conductors, ground terminals, interconnecting conductors, arresters, and other connectors for fittings required to complete the system.
Lighting Protection System
This is a complete system of air terminals, conductors, ground terminals, interconnecting conductors, arresters, and other connectors or fittings required to complete the system.
Lightning Protection System
SHALL BE VERIFIED TO OPERATE CORRECTLY FROM VOLTAGE AND CURRENT SOURCES IN A SIMILAR MANNER TO PROTECTIVE RELAY CIRCUITS
METERING CIRCUITS
What is the service disconnecting mean rating of a one-family dwelling?
Not less than 60 amperes, 3-wire
If multiconductor cables are installed in _____, the equipment grounding conductors in each cable shall be connected in parallel
Parallel
A test report covering the results of the tests required in _______ shall be delivered to the OBO/EE prior to energization.
Pre-Energization and Operating Tests
A CORD CONNECTOR THAT IS SUPPLIED BY A PERMANENTLY CONNECTED CORD PENDANT SHALL BE CONSIDERED ____________.
RECEPTACLE OUTLET
What is the size of overhead conductors for festoon lighting?
Shall not be smaller than 3.5 mm² (2.0 mm dia.)
What is used as a protective device in a system where interruption of the circuit would create hazards such as fire pump circuit?
Short circuit protection
What is the use of service masts?
Support of service-drop or overhead service conductors.
Where the box is mounted on the surface?
Surface Mounted Box
This maybe referred to as lightning arresters in older documents.
Surge Arresters
What is an SPDs
Surge Protective Device/s
A conductor, other than a service conductor, that has overcurrent protection ahead of its point of supply that exceeds the value permitted for similar conductors that are protected?
Tap Conductor
It shall be connected to the common grounding electrode conductor, in such a manner that a common grounding electrode conductor remains without a splice or joint.
Tap Conductors
A conductor, other than a service conductor, that has overcurrent protection ahead of its point of supply that exceeds the value permitted for similar conductors that are protected as described elsewhere.
Tap conductor
What is the minimum size of an Overhead Service Conductors?
The conductor shall not be smaller than 8.0 mm2 (3.2 mm dia) copper or 14 mm2 aluminum or copper-clad aluminum.
How to determine the minimum number of branch circuits?
Total calculated load and the size or rating of the circuits used.
The minimum number of branch circuits shall be determined from?
Total load and circuit rating(Supply)
This type of adapter shall be designed so that once inserted in a fuseholder, they cannot be removed.
Type S Adapters
The _______ of a grounded conductor shall not depend on a connection to a metallic enclosure, raceway, or cable armor.
continuity
A 30-ampere branch circuit shall be permitted to supply _____.
lighting units with heavy-duty lamp holders or utilization equipment
For installations consisting of not more than two 2-wire branch circuits, the service disconnecting means shall have a rating of _______.
not less than 30 amperes
A cord connector that is supplied by a permanently connected cord pendant shall be considered a?
receptacle outlet
How should fuses be arranged in relation to each ungrounded conductor, according to PEC overcurrent protection?
series
The SPD shall be marked with a _______________________ and shall not be installed at a point on the system where the available fault current is in excess of that rating.
short-circuit current rating
:For ____________________, a load of not less than 660 volt-amperes/linear meter shall be included for a show window, measured horizontally along its base.
show-window lighting
The lightning protection system ground terminals shall be bonded to, what?
the building or structure grounding electrode system
Circuit breakers used in a 3 phase system must have a minimum of ______ operated from three current transformers
three overcurrent relay
An outlet supplying luminaire(s) shall be calculated based on the maximum ______ of the equipment and lamps for which the luminaire(s) is rated.
volt-ampere rating
