Significant Changes to the PEC 1 2009

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Transcript of Significant Changes to the PEC 1 2009

  • Significant Changesto the

    Philippine Electrical Code 2009 Edition

    Jaime V. Mendoza, MTMJaime V. Mendoza, MTM

    Board MemberBoard Member

    PROFESSIONAL REGULATION COMMISSIONBOARD OF ELECTRICAL ENGINEERING

  • 2Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    PEC 2009 (8th Edition)

    BEE Resolution No. 12 Series of 2009 Adoption of the Revised (8th Edition) Philippine Electrical Code Part I as Part of the Rules and Regulations Concerning the Practice of Electrical Engineering and as Referral Code in Accordance with the National Building Code Sept. 14, 2009.

    Published in the Philippine Star last February 18, 2010 (Thursday) page B-10

  • 3Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    R. A. 7920R. A. 7920

    An Act For, A More Responsive and Comprehensive Regulation For the Practice, Licensing, and Registration of Electrical Engineers and Electricians.

    Sec. 4 Powers and Duties of the Board The Board shall exercise executive The Board shall exercise executive

    /administrative or quasi/administrative or quasi--legislative (rulelegislative (rule--making) or quasimaking) or quasi--judicial (investigative) judicial (investigative) powers in carrying out the provisions of powers in carrying out the provisions of this Act.this Act.

  • 4Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Powers of the Board

    Sec. 29. Revocation of Certificates of Registration and Suspension from the Practice of the Profession. The Board shall have the power, upon proper

    notice and hearing, to revoke any certificate of registration of any registrant, to suspend him from the practice of the profession or to reprimand him for any specified in the preceding section, or for the use of perpetration of any fraud or deceit in obtaining a certificate of registration, or for gross negligence or incompetence or for unprofessional or dishonorable conduct, for violation of this Act, the rules and regulations and other policies of the Board and the Code of Professional Ethics.

  • 5Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Licensing Definition a permission granted by competent

    authority to engage in a practice of profession or business or in an activity.

    A PEE who designed, signed, and sealed an electrical plans means he/she guaranteed the safety of the electrical plans for 15 years in accordance to Civil Code.

    PEE, REE or RME who signed as in-charge of installations also guaranteed the safety of the electrical installations for 15 years.

    You can only guaranteed the safety of your electrical designs/installations if you are well-versed in the Philippine Electrical Code.

    Licensing guarantees the safety

    of your works!!!!

  • 6Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    PURPOSE OF PECThe primary objective of the code is to establish basic materials quality and electrical works standards for the safe use of electricity for light, heat, power, communications, signaling and for other purposes.Practical safeguarding of persons and property from hazards arising from the use of electricity

    THE PHILIPPINE ELECTRICAL CODEKEY TO SAFETY AND FIRE PREVENTION

    COMPLIANCE TO THE PEC WILL ENSURE SAFETY AND PREVENT ELECTRICAL FIRES

  • 7Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    The Philippine Grid/Distribution

    CodesPerformance

    Standards

    Power Quality Reliability System Loss

    GRID/DISTRIBUTION DEVELOPMENT

    PLANNING CRITERIA

    The Philippine Electrical Code

    SafetyStandards

    Design and Specifications Installation Operation & Maintenance

  • 8Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Consideration should be given for future expansion of electrical systems but this is not a Code requirement.

    The PEC is a safety standard, not a design guide. Electrical designs must comply with the requirements of PEC to ensure safety.

    Energy management, maintenance, and power quality issues arent within the scope of the PEC.

    THE PHILIPPINE ELECTRICAL CODE

  • 9Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Philippine Electrical Code

    Enforcement1. This Code is intended for mandatory application

    by government bodies exercising legal jurisdiction over electrical installation.

    2. These government bodies will have the responsibility of implementing the provision of this Code in deciding on the approval of equipment and materials and for granting the special permission contemplated in this Code, where it assured that equivalent objectives can be achieved by establishing and maintaining effective safety.

  • 10

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Philippine Electrical Code

    InterpretationUpon recommendation of the Code Upon recommendation of the Code Committee, the Committee, the Board of Electrical Board of Electrical Engineering shall render the final Engineering shall render the final decisiondecision in the interpretation of any in the interpretation of any portion of the Philippine Electrical portion of the Philippine Electrical Code, in case of controversy.Code, in case of controversy.

  • 11

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    The National Electrical Code The first documented case of a Code as a

    requirement of rules was published on 16th Nov. 1881 entitled The Dangers of Electric Lighting.

    The first NEC was developed in 1897, eighteen after the invention of incandescent light bulb by Thomas A. Edison.

    Since 1911, the NFPA of Quincy, Massachussets, has been responsible for the maintenance and publication of the NEC.

    Regularly revised (every three years) to reflect the evolution of products, materials, and installation techniques.

    21 Separate Committee, each consisting of 15-20 persons. Members of each committee meet several times, discuss proposed changes, accepting some and rejecting others, and rewrite (as required) the sections of the Code that were assigned to their committee.

  • 12

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    THE PHILIPPINE ELECTRICAL CODE

    Code Arrangement

  • 13

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    CLASSIFICATION OF CODE RULES

    1. Wiring Design Rules2. Installation Rules3. Manufacturing Rules

    THE PHILIPPINE ELECTRICAL CODE

  • 14

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Wiring design rules used to determine sizes and rating of circuit conductors and devices.

    Example:1. Branch circuit conductors supplying a single

    motor shall have an ampacity not less than 125% of the full-load current. Section 4.30.2.2

    2. The disconnecting means for motor circuits shall have an ampere rating of at least 115% of the full-load current rating of the motor. Section 4.30.10.10(a)

    THE PHILIPPINE ELECTRICAL CODE

    CLASSIFICATION OF CODE RULES

  • 15

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Installation rules

    Example:1. A disconnecting means shall be located within

    sight from the motor controller. Section 4.30.102

    2. In class II Division I Locations, motors, generators, and other rotating electric machinery shall be dust ignition proof or totally enclosed pipe ventilated and shall be approved for class II locations. Sections 5.02.8

    THE PHILIPPINE ELECTRICAL CODE

    CLASSIFICATION OF CODE RULES

  • 16

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Manufacturing rules

    Example:

    Section 4.30.1.7

    A motor shall be marked with the following information:

    1) Manufacturers Name

    2) Rated Volts and Full-load Amperes

    3) Rated Frequency and Number of Phases, if an alternating current motor, etc.

    4) Rated full-load speed

    THE PHILIPPINE ELECTRICAL CODE

    CLASSIFICATION OF CODE RULES

  • 17

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Various Categories of the Code Rules which apply in a Motor and the Circuits

    The Philippine Electrical Code

  • 18

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    ELECTRICAL FIRES

    If a fault develops, the current (and heat energy) can increase to the extent that either the appliance burns out, the connecting wiring overheats and melts the plastic insulation or the plug and socket may burn out.

    An electrical fire then occur where the overheated wiring, motor, plug, etc. are in contact with or close to flammable or combustible material.

    ELECTRICAL FIRE can be defined as a fire where an electric current or electrical fault is found to have been the source of ignition.

  • 19

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Components that Create a Fire or Explosion

    Triangle of Fire

    combustion

    Very Significant on PEC Installation Rules!!!

  • 20

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Regularly revised (every three years) to reflect the evolution of products, materials, and installation techniques.

    21 Separate Committee, each consisting of 15-20 persons. Members of each committee meet several times, discuss proposed changes, accepting some and rejecting others, and rewrite (as required) the sections of the Code that were assigned to their committee.

    Significant Changes to thePhilippine Electrical Code 2009 Edition

  • 21

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Change Type in the PEC 2009

    1. New

    2. Revision

    3. Relocated

    4. Reorganization

    5. Universal Change

    6. Deletion (310.5)

  • 22

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    New - Definitions

    AHJ Authority Having Jurisdiction Bonding Jumper, System Coordination (Selective) Electrical Practitioner, Licensed Electrical Practitioner, Non-Licensed Guest Rooms Guest Suite Handhole Enclosure

  • 23

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Guest Room

    An accommodation combining living, sleeping,sanitary and storage facilities.

  • 24

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Guest Suite

    An accommodation with two or more contiguous roomscomprising a compartment, with or without doors betweensuch rooms, that provides living, sleeping, sanitary, and storage facilities.

  • 25

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    New Provision

    PEC 2.10.1.5 (c) Identification for Branch Circuits, page 69

    (c) Ungrounded ConductorsWhere the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit, where accessible shall be identified by system. The means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means and shall be permanently posted at each branch-circuit panelboard or similar branch-circuit distribution equipment.

  • 26

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    PEC 2.10.1.5 (c) Identification for Branch Circuit for Ungrounded Conductors

  • 27

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    New Provision

    2.10.1.8(b)(2) GFCI Protection Other than Dwelling Commercial and

    institutional kitchens for the purposes of this section, a kitchen is an area with a sink and permanent facilities for food preparation and cooking. (Culinary Schools)

  • 28

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    New Provision

    2.10.1.8(b)(4) GFCI Protection Other than Dwelling Outdoor in Public

    Spaces for the purpose of this section a public space is defined as any space that is for use by, or is accessible to the public.

  • 29

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.10.1.8(b)(5) GFCI Protection Other than Dwelling (5)Outdoor , where

    installed to comply with 2.10.3.14 Heating, Air-conditioning, and Refrigeration Outlet

    New Provision

  • 30

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

  • 31

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    New Provision

    2.10.1.8(c)Boat Hoists GFCP for personnel

    shall be provided for outlets that supply boat hoists installed in dwelling unit locations

  • 32

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    b) Other than Dwelling Units1) Bathrooms*

    2) Commercial and institutional kitchens

    3) Rooftops*

    4) Outdoors in public spaces

    5) Outdoors, where installed to comply with 2.10.3.14

    * Including in PEC 2000

    2.10.1.8 GFCI Protection for Personnel

  • 33

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    PEC-2.10.1.8 (a)a) Dwelling Units

    1. Bathrooms2. Garages3. Outdoors4. Crawl spaces at or

    below grade level5. Unfinished

    basements6. Kitchens for

    countertopappliances

    7. Wet bar sinks8. Boathouses (New Provision)

    GFCI Protection for Personnel

  • 34

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.10.1.12.Arc-Fault Circuit Interrupter Protection

    (b) Dwelling Unit Bedrooms All single phase, 15 and 20 A branch circuits supplying outlets installed in dwelling unit bedrooms shall be protected by a listed AFCI. Combination type installed to provide protection of the branch circuit.

    New Provision

  • 35

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Arc-Fault Circuit Interrupter

    An AFCI is a device intended to open the circuit whenit detects the current waveform characteristics that are unique to an arcing fault.

  • 36

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    AFCI

  • 37

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Ground Fault Circuit Interrupter

    A GFCI is designed to protect persons against electric shock.It operates on the principles of monitoring the unbalanced currentBetween the ungrounded and the grounded neutral conductor.

  • 38

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    p88

    New Provision

  • 39

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Revised - Definition

    Dwelling Unit one or more rooms for the use of one or more persons as a housekeeping unit with space for eating, living, sleeping, and permanent provisions for cooking and sanitation. PEC 2000

    Dwelling Unit a single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation. (PEC 2009)

  • 40

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.10.1.8(a)(8) GCFI Protection Laundry, utility, and wet bar sinks

    where the receptacles are installed to serve the countertop surfaces and are located within 1.8 m (6 ft) of the outside edge of the sink.

    Laundry, utility, and wet bar sinks where the receptacles are installed within 1.8 m (6 ft) of the outside edge of the sink.

    Revised - Definition

  • 41

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    GFCI Protection for Personnel

    7. Dwelling Wet Bar Sinks

  • 42

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

  • 43

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Garage a building or portion of a building in which one or more self-propelled vehicles carrying volatile flammable liquid, for fuel or power are kept for use, sale, storage, rental, repair, exhibition, or demonstrating purposes, and all that portion of a building that is on or below the floor or floors in which such vehicles are kept and that is not separated there from by suitable cutoffs.

    Garage A building or portion of a building in which one or more self-propelled vehicles can be kept for use, sale, storage, rental, repair, exhibition, or demonstration purposes.

    Revised - Definition

  • 44

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Relocated -Definition

    Solidly Grounded PEC 2000 Grounded, Solidly PEC 2009

  • 45

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.1.1.6(b) Means of IdentyingGrounded Conductors PEC-2000

    (b) Sizes Larger than 14 mm2. An insulated rounded conductor larger than 14 mm2 shall be identified either by a continuous white or natural gray outer finish or by three continuous white stripes on other than green insulation along its entire length or at the time of installation by a distinctive white marking at its terminations. This marking shall encircle the conductor or insulation.

  • 46

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

  • 47

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Sizes Larger Than 14 mm2. An insulated conductor larger than 14 mm2 shall be identified by one of the following means:1) By a continuous white or gray cover finish.2) By three continuous white stripes along its

    entire length on its entire length on other than green insulation

    3) At the time of installation, by a distinctive white or gray marking at its terminations. This marking shall encircle the conductor or insulation.

    2.1.1.6(b) Means of IdentyingGrounded Conductors PEC-2009

  • 48

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Section 2.0.1.6 (a)

  • 49

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    (d) Grounded Conductors of Different Systems. Where conductors of different systems are installed in the same raceway, cable, box, auxiliary gutter, or other type of enclosure, one system grounded conductor, if required, shall have an outer covering conforming to Section 2.1.1.6(a) or (b). Each other system grounded conductor shall have an outer covering of white with a readily distinguishable different colored stripe (not green) running along the insulation, or other and different means of identification as allowed by Section 2.1.1.6(a) or (b) that will distinguish each system grounded conductor.

    2.1.1.6(d) Means of Identifying Grounded Conductors PEC-2000

  • 50

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    (d) Grounded Conductors of Different Systems. Where grounded conductors of different systems are installed in the same raceway, cable, box, auxiliary gutter, or other type of enclosure, each grounded conductor shall be identified by system. Identification that distinguishes each system grounded conductor shall be permitted by one of the following means:

    (1) One system grounded conductor shall have an outer coveringconforming to 2.0.1.6(a) or 2.0.1.6(b).

    (2) The grounded conductor(s) of other systems shall have adifferent outer covering conforming to 2.0.1.6(a) or 2.0.1.6(b) or by anouter covering of white or gray with a readily distinguishable coloredstripe other than green running along the insulation.

    (3) Other and different means of identification as allowed by2.0.1.6(a) or 2.0.1.6(b) that will distinguish each system groundedconductor.This means of identification shall be permanently posted at eachbranch-circuit panelboard.

    2.1.1.6(d) Means of Identifying Grounded Conductors PEC-2009

  • 51

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    An Example of Conductor Color Coding

    120/240 V, Single Phase

    208Y/120 V, Three-Phase

    480Y/277-V, Three-Phase

    Phase A Black Black Brown

    Phase B Red Red Orange

    Phase C Blue Yellow

    Neutral White White with red Stripe

    Gray

  • 52

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Section 2.0.1.6 (d) (1)

  • 53

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Mixing Grounded Neutral Conductors Different System Sec. 2.0.1.6(d)(2)

  • 54

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Section 2.0.1.7(c)

  • 55

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Branch Circuits

    A. Tamper-Resistant Receptacles in Dwellings Unit (406.11) (NEC-2008)

    Why do you think it is a tamper-resistant receptacle?

    ..To increase safety for children.

    ..maybe that your son, daughter, orgrandchildren that you will save

  • 56

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Branch CircuitsA. Tamper-Resistant Receptacles in

    Dwellings Unit (406.11) (NEC-2008)

  • 57

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Reorganization Article 2.20Branch-Circuit, Feeder, and Service Calculations

    2000 Article 2.20 2009 Article 2.20

    Part Sections Part Sections

    I. General 2.20.1.1- 4 I. General 2.20.1.1 -5

    II. Feeders and 2.20.2.1 - 14Services

    II. Branch Circuit 2.20.2.1 - 7Load Calculations

    III. Optional 2.20.3.1 - 7Calculations forComputing Feeder and Service Loads

    III. Feeder and 2.20.3.1 - 23Service LoadCalculations

    IV. Method for 2.20.4.1 - 2Computing Farm Loads

    IV. Optional Feeder2.20.4.1 - 9And Service LoadCalculations

    V. Farm Calculation 2.20.5.1- 4

  • 58

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Universal Change

    A universal change throughout the 2009 PEC is the replacement of computed load and demand load with calculated load. For example, the term demandload is being replaced with calculated load to improve clarity and to reduce confusion, especially when related to calculated load and demand factor.The term calculated load includes demand factor, the concepts of diversity, and historical data.

  • 59

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.30.6 Service Equipment Disconnecting Means

    a) Locationa) Readily Accessible Location. The service

    disconnecting means shall be installed at a readily accessible location of a building or a structure. For a building, the service disconnecting means shall be installed either at the outside wall or inside nearest point of entrance of the service conductors to the building.

  • 60

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

  • 61

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.30.6 Service Equipment Disconnecting Means

    a) Location2) Bathrooms. Service disconnecting means

    shall NOT be installed in bathrooms.

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    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

  • 63

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    The title of Article 2.50 has been changed from Grounding to Grounding and Bonding.

    Change Significance: The scope of the article clearly covers both grounding and bonding. Adding the term bonding to the title of the article is appropriate, and is consistent with the fact that there are generally as many bonding requirements and provisions included within Article 2.50 as there are grounding requirements, if not more.

    Article 2.50 Grounding and Bonding

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    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

  • 65

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.50.1.2 Definitions (Revision)

    Effective Ground-Fault Current Path An intentionally constructed, permanent, low impedance electrically conductive path designed and intended to carry current under ground-fault conditions from the point of a ground fault on a wiring system to the electrical supply source and that facilitates the operation of the overcurrent protective device or ground-fault detectors on high-impedance grounded systems.

  • 66

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Effective Ground-Fault Current Path

    Metal parts of premises wiring are bonded to an effectiveground-fault current path that has sufficiently low impedanceto quickly clear line-to-case faults by opening the circuit protection device.

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    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Effective Ground-Fault Current Path

  • 68

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Effective Ground-Fault Current Path

  • 69

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Earth is Not an Effective Ground-Fault Current Path

  • 70

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Ground Fault- An unintentionally, electrically conducting connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors, metallic enclosures, metallic raceways, metallic, or earth.

    2.50.1.2 Definitions

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    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    2.50.1.2 Definitions

    Ground-Fault Current Path- An electrically conductive path from the point of ground fault on a wiring system through normally non-current-carrying conductors, equipment, or the earth to the electrical supply source.

  • 72

    Significant Changes to thePhilippine Electrical Code 2009

    BOARD OF ELECTRICAL ENGINEERINGPROFESSIONAL REGULATION COMMISSION

    Article 2.50

    2.50.2.5(b) Main Bonding Jumper 2.50.2.11 Grounding Separately Derived

    Alternating-Current Systems

    2.50.2.13 Buildings or Structures Supplied by Feeder(s) or Branch Circuit(s)

    2.50.3 Grounding Electrode System and Grounding Electrode Conductor

    2.50.10 Grounding of Systems and Circuits of 1 kV and Over (High Voltage)

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    3.10.1.4 Conductors in Parallel

    The paralleled conductors in each phase, polarity, neutral, or grounded circuit conductor shall comply with all the following:1. Be the same length2. Have the same conductor material3. Be the same size in circular mil area4. Have the same insulation type5. Be terminated in the same manner.Why?????? .. See FPN:

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    3.10.1.5 Minimum Size of Conductors

    The minimum size of conductors shall be as shown in Table 3.10.1.5, except as permitted elsewhere in this Code.

    Removal of 10 previous exceptions were not needed

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    3.10.1.6 Shielding

    In this sections exception, the voltage has been reduced from 8 kV to 2.4 kV for use of unshielded conductors. Cables operated at a voltage higher than 2.4 kV will now be required to be shielded.

    Many cable manufacturers specifically recommend against the use of non-shielded cable above 2 kV because of arcing problems and cables without shielding have a very high failure rate.

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    3.10.1.8 Locations

    d) Locations Exposed to Direct Sunlight. Insulated conductors and cables used where exposed to direct rays of the sun shall comply with one of the following: (be of a type listed for sunlight resistance or listed and marked sunlight resistant)1) Cables listed, or listed and marked , as being sunlight

    resistant2) Conductors listed, or listed and marked , as being

    sunlight resistant3) Covered with insulating material, such as tape or

    sleeving, that is listed and marked ,as being sunlight resistant.

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    3.10.1.10 Temperature Limitation of Conductors

    The PEC 2009 has added a new Fine Print Note with information on derating for conduits on rooftops that have direct sunlight exposures; 17C is the indicated value to be added to the outdoor ambient temperature to compensate for the direct solar gain.

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    3.10.1.15(b)(2) Adjustment Factors

    A new last sentence has been added to 3.10.15(b)(2)(a) to require that individual conductors of paralleled sets be counted as current-carrying conductor. This is intended to clarify varying interpretations of whether each conductor of a paralleled set of conductors is required to be counted individually or if all of the conductors count as one for the purpose of derating. Clearly, each conductor of the parallel set is required to be counted individually for the purposes of rating.

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    Configuration Conductor if Neutral is Counted

    DeratingPercentage

    Conductors if Neutral is Not Counted

    DeratingPercentage

    All conductors in single conduit 12 9

    4 conductors in 3 conduits or cables 4 3

    All conductors in metal wireway or auxiliary gutter

    12 9

    All conductors in nonmetallic wireway or auxiliary gutter

    12 9

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    Table 3.10.1.15(b)(2)(a) Adjustment Factors for More than Three Current-Carrying Conductors in a Raceway or Cable

    Number of Current-Carrying Conductors

    Percent of Values in Tables 3.10.1.16 Through 3.10.1.19 as Adjusted for

    Ambient Temperature if Necessary

    4 67 9

    10 2021 3031 40

    41 and above

    807050454035

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    Configuration Conductor if Neutral is Counted

    DeratingPercentage

    Conductors if Neutral is Not Counted

    DeratingPercentage

    All conductors in single conduit 12 50 9 70

    4 conductors in 3 conduits or cables 4 80 3

    Not

    required

    All conductors in metal wireway or auxiliary gutter

    12

    Not

    required 9

    Not

    required

    All conductors in nonmetallic wireway or auxiliary gutter

    12 50 9 70

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    (4) Neutral Conductor.a) A neutral conductor that carries only the unbalanced current

    from other conductors of the same circuit shall not be required to be counted when applying the provisions of Section3.10.1.15(b)(2)(a).

    b) In a 3-wire circuit consisting of two phase wires and the neutral of a 4-wire, 3-phase wye-connected system, a common conductor carries approximately the same current as the line-to-neutral load currents of the other conductors and shall be counted when applying the provisions of Section 3.10.1.15(b)(2)(a).

    c) On a 4-wire, 3-phase wye circuit where the major portion of the load consists of nonlinear loads, harmonic currents are present in the neutral conductor; the neutral shall therefore beconsidered a current-carrying conductor.

    Section 3.10.1.15(b)(4)

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    Notes

    For metal auxiliary gutters, 3.66.2.14(a) indicates that derating is not required so long as the number of current-carrying conductors at any cross section does not exceed 30. A similar statement is included for sheet metal wirewaysin 3.76.2.13.

    Derating for the number of current-carrying conductors in non-metallic auxiliary gutters and wireways is required, beginning at four-current carrying conductors, because conductors in non-metallic enclosures do not dissipate heat as well as those in sheet-metal enclosures.

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    Introduction

    Art. 6.95 contains many requirements to keep that supply of water uninterrupted.

    For example:1. Locating the pump so as to minimize its

    exposure to fire.

    2. Ensuring that the fire pump and its jockey pump have a reliable source of power.

    3. It makes sense to keep fire pump wiring independent.

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    Introduction

    Other requirements seem wrong at first glance, until you remember why the fire pump is there in the first place.

    For example:1. The disconnect must be lockable in the

    closed position.

    2. Fire pumps power circuits cannot have automatic protection against overload.

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    Introduction

    Its better to run the fire pump until its winding melt, than to save the fire pump and lose the facility

    And the intent of Article 6.95 is to save the facility.

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    6.95.1.1 Scopea) Covered

    1) Electric power sources and interconnecting circuits

    2) Switching and control equipment dedicated to fir pump drivers

    b) Not Covered1) The performance, maintenance, and

    acceptance testing of the fire pump system, and the internal wiring of the components of the system

    2) Pressure maintenance (jockey or makeup) pumps

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    6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps

    a) Individual Source1) Electric Utility Service. A separate

    service from a connection located ahead of but not within the service disconnecting means.

    2) On-Site Power. An on-site power supply, such as generator, located and protected to minimize damage by fire is permitted to supply a fire pump.

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    6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps

    a) Electric-Utility Service Connection

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    6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps

    a) Electric-Utility Service Connection

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    6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps

    2) On-Site Power Production Facility

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    6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps

    b) Multiple Sources1) Generator Capacity. Shall have

    sufficient capacity to allow normal starting and running 0f the motor(s) driving the fire pump(s) while supplying other simultaneously operated load.

    2) Feeder Sources.

    3) Arrangement. The power sources shall be arranged so that a fire at one will not cause an interruption at the other source.

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    6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps

    2) Feeder Sources

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    Dedicated transformer and overcurrentprotection sizing can be broken down into three requirements.1. The transformer must be size to at least 125%

    of the sum of the loads.

    2. The transformer primary overcurrent device must be at least a specified minimum size.

    3. The transformer secondary must not contain any overcurrent device whatsoever.

    6.95.1.5 Transformers

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    6.95.1.5 Transformers

    The overcurrent device in the primary of a transformer supplying a fire pump installation. The device is required to be sized to carry the locked-rotor current motor(s) and associated fire pump accessory equipment indefinitely.

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    6.95.1.6 Power Wiring

    a) Service and Feeder Conductors.

    Supply conductors must be physically routed outside buildings and must be installed in accordance with Article 2.30. Where supply conductors cannot be routed outside buildings, they must be encased in 2 inches or 50 mm of concrete or brick.

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    6.95.1.6 Power Wiring

    b) Circuit Conductors.

    Fire pump supply conductors on the load side of the final disconnecting means and overcurrent device(s) must be kept entirely independent of all other wiring. They can be routed through a building using one of the following methods:1) Be encased in a minimum 2 inches or 50 mm of

    concrete2) Be within an enclosed construction dedicated to

    the fire pump circuit(s) and having a minimum of a 1-hour fire-resistant rating

    3) Be listed electrical circuit protective system with a minimum 1-hour fire rating.

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    6.95.1.6(c)(2) BC Conductor Size

    Fire Pump MotorBranch Circuit Conductor Size

    Branch circuit conductors to a single fire pump motor must have a rating not less than 125% of the motorFLC as listed in Table 4.30.14.2 or 4.30.14.4

    From Table 4.30.14.5(b)

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    6.95.1.7 Voltage Drop

    The voltage drop at the line terminals of the controller when the motor starts (locked-rotor current), must notdrop more than 15% below the controllers rated voltage.

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    6.95.1.7 Voltage Drop

    Fire Pump Conductor Size Voltage Drop

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    6.80 Swimming Pools, Fountains, and Similar Installations

    Article 6.80 - applies to decorative pools and fountains; swimming, wading, and wave pools; therapeutic tubs and tanks; hot tubs; spas; hydromassage bathtubs; and similar installation including pools used in religious services where participants are immersed in water. The installations covered by this article can be indoors or outdoors, permanent or storable, and may or may not be directly supplied by electrical circuits of any nature.

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    6.80.1.2 Definitions

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    6.80.1.2 Definitions

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    6.80.1.3 Other Articles

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    6.80.1.8 Overhead Conductor Clearance

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    6.80.1.8 Overhead Conductor Clearance

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    6.80.1.12 Maintenance Disconnecting Means

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    6.80.2 Permanently Installed Pools

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    6.80.2 Permanently Installed Pools

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    6.80.2.3(a)(4) Restricted Space

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    6.80.2.3(a)(5) GFCI Protection

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    6.80.2.3(a)(5) GFCI Protection

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    6.80.2.3(a)(5) GFCI Protection

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    4.11.1.4(b) Lighting Systems Operating at 30 V or less

    10 ft = 3 m

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    6.80.2.3(b) Luminaires

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    6.80.2.4(a)(4) Underwater Luminaires

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    6.80.2.4(f) Branch-Circuit Wiring

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    6.80.2.7 Equipotential Bonding

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    6.80.2.7 Equipotential Bonding

    Bonding of conductive metal parts in a swimming pool.

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    6.80.4.2 Emergency Switch for Spas and Hot tubs

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    6.80.4.4 Indoor Installations of Spas and Hot Tubs

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    6.80.4.5 GFCI Protection

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    6.80.5 Fountains

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    6.80.7 Hydromassage bathtubs

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    6.82 Natural and Artificially Made Bodies of Water (New Article)

    An artificially made of body of water. The electrical equipmentassociated with pumps used to circulate water in this artificialpond is subject to the requirements of Article 6.82.

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    Definitions

    Artificially Made of Bodies of Water Bodies of water that have been constructed or modified to fit some decorative or commercial purpose such as, but not limited to, aeration ponds, fish farm ponds, storm retention basins, treatment ponds, irrigation (channel) facilities. Water depths may vary seasonally or be controlled.

    Natural Bodies of Water Bodies of water such as lakes, streams, ponds, river, and other naturally occuring bodies of water, which may vary in depth throughout the year.

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    Thank You !!!!

    GOOD Morning!

    &

    Significant Changesto thePhilippine Electrical Code 2009 EditionPEC 2009 (8th Edition)R. A. 7920Powers of the BoardLicensingTHE PHILIPPINE ELECTRICAL CODEKEY TO SAFETY AND FIRE PREVENTIONThe Philippine Grid/Distribution CodesTHE PHILIPPINE ELECTRICAL CODEPhilippine Electrical CodePhilippine Electrical CodeThe National Electrical CodeTHE PHILIPPINE ELECTRICAL CODETHE PHILIPPINE ELECTRICAL CODETHE PHILIPPINE ELECTRICAL CODETHE PHILIPPINE ELECTRICAL CODETHE PHILIPPINE ELECTRICAL CODEThe Philippine Electrical CodeELECTRICAL FIRESComponents that Create a Fire or ExplosionSignificant Changes to thePhilippine Electrical Code 2009 EditionChange Type in the PEC 2009New - DefinitionsGuest RoomGuest SuiteNew ProvisionPEC 2.10.1.5 (c) Identification for Branch Circuit for Ungrounded ConductorsNew ProvisionNew ProvisionNew ProvisionNew Provision2.10.1.8 GFCI Protection for PersonnelGFCI Protection for PersonnelNew ProvisionArc-Fault Circuit InterrupterGround Fault Circuit InterrupterNew ProvisionRevised - DefinitionRevised - DefinitionGFCI Protection for PersonnelRevised - DefinitionRelocated -Definition2.1.1.6(b) Means of Identying Grounded Conductors PEC-20002.1.1.6(b) Means of Identying Grounded Conductors PEC-20092.1.1.6(d) Means of Identifying Grounded Conductors PEC-20002.1.1.6(d) Means of Identifying Grounded Conductors PEC-2009An Example of Conductor Color CodingMixing Grounded Neutral Conductors Different System Sec. 2.0.1.6(d)(2)Branch CircuitsBranch CircuitsReorganization Article 2.20Branch-Circuit, Feeder, and Service CalculationsUniversal Change2.30.6 Service Equipment Disconnecting Means2.30.6 Service Equipment Disconnecting MeansArticle 2.50 Grounding and Bonding2.50.1.2 Definitions (Revision)Effective Ground-Fault Current PathEffective Ground-Fault Current PathEffective Ground-Fault Current PathEarth is Not an Effective Ground-Fault Current Path2.50.1.2 Definitions2.50.1.2 DefinitionsArticle 2.503.10.1.4 Conductors in Parallel3.10.1.5 Minimum Size of Conductors3.10.1.6 Shielding3.10.1.8 Locations3.10.1.10 Temperature Limitation of Conductors3.10.1.15(b)(2) Adjustment FactorsNotesIntroductionIntroductionIntroduction6.95.1.1 Scope6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps6.95.1.3 Power Sources for Electric-Motor Driven Fire Pumps6.95.1.5 Transformers6.95.1.5 Transformers6.95.1.6 Power Wiring6.95.1.6 Power Wiring6.95.1.6(c)(2) BC Conductor Size6.95.1.7 Voltage Drop6.95.1.7 Voltage Drop6.80 Swimming Pools, Fountains, and Similar Installations6.80.1.2 Definitions6.80.1.2 Definitions6.80.1.3 Other Articles6.80.1.8 Overhead Conductor Clearance6.80.1.8 Overhead Conductor Clearance6.80.1.12 Maintenance Disconnecting Means6.80.2 Permanently Installed Pools6.80.2 Permanently Installed Pools6.80.2.3(a)(4) Restricted Space6.80.2.3(a)(5) GFCI Protection6.80.2.3(a)(5) GFCI Protection6.80.2.3(a)(5) GFCI Protection4.11.1.4(b) Lighting Systems Operating at 30 V or less6.80.2.3(b) Luminaires6.80.2.4(a)(4) Underwater Luminaires6.80.2.4(f) Branch-Circuit Wiring6.80.2.7 Equipotential Bonding6.80.2.7 Equipotential Bonding6.80.4.2 Emergency Switch for Spas and Hot tubs6.80.4.4 Indoor Installations of Spas and Hot Tubs6.80.4.5 GFCI Protection6.80.5 Fountains6.80.7 Hydromassage bathtubs6.82 Natural and Artificially Made Bodies of Water (New Article)Definitions