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PROFESSIONAL REGULATION COMMISSION

BOARD OF ELECTRICAL ENGINEERING

Philippine Electrical Code

Part 1 2017 Ed. –
Highlights and Impacts

Jaime V. Mendoza, FIIEE, PEE, ACPE & APEC

Member
Board of Electrical Engineering

43rd Annual IIEE National Convention

SMX Convention Center
Pasay City, Metro Manila, Philippines
November 14 – 17, 2018
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❑ How many new Articles where included in

the PEC 2017 that are not in the PEC
2009?
❑ How will you know if these Article or
Section where the new changes in PEC
2009?
❑ For PEC 2017?

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Philippine Electrical Code Part I

2017 Edition
❑ The Energy Regulatory Commission adopts the
PEC Part 1 and Part 2 set by the Professional
Regulation Commission as Safety Standards for
Generation Companies, Transmission Providers ,
Distribution Utilities and Suppliers in the
Philippine Grid Code (PGC) and Philippine
Distribution Code (PDC).
❑ Also adopted in the Occupational Safety and
Health Standards by the BWC-DOLE as a
“Electrical Safety Standard” (Rule 1210-Electrical
Safety).

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RULE 1210: ELECTRICAL SAFETY

❑ What standards on Electrical Safety must be
adopted to safeguard any person employed
in any workplace?

▪ The Philippine Electrical Code is hereby

adopted & the standards contained therein
shall be considered safety standards

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The Philippine
The Philippine Electrical
Grid/Distribution
Code Part 1 & 2
Codes
Performance
Standards & Connection
Safety
Req’ts Standards
• Power Quality • Design and Specifications
• Reliability • Installation
• System Loss • Operation & Maintenance

GRID/DISTRIBUTION
ELECTRICAL DESIGN &
INSTALLATIONS

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Philippine Electrical Code Part I

2017 Edition
❑ Based on 2017 National Electrical Code
(NFPA 70)
❑ The Philippine Electrical Code Part 1 2009
Edition was based on NEC 2005
❑ The Fire Code for the Safe Use of
Electricity
❑ Minimum Electrical Safety Standard

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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.

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Philippine Electrical Code Part I

2017 Edition
❑ Based on 2017 National Electrical Code (NFPA
70)
❑ The Philippine Electrical Code Part 1 2009 Edition
was based on NEC 2005
❑ Regularly revised (every three years) to reflect
the evolution of products, materials, and
installation techniques.
❑ NEC 2008, NEC 2011, NEC 2014 & NEC 2017
❑ NEXT NEC REVISION: NEC 2020, 2023, 2026,
2029
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THE PHILIPPINE ELECTRICAL CODE

KEY TO ELECTRICAL SAFETY AND FIRE
PREVENTION
PURPOSE OF PEC
The 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”
COMPLIANCE TO THE PEC WILL ENSURE SAFETY AND
PREVENT ELECTRICAL FIRES

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Philippine Electrical Code Part I

2017 Edition
This Code is intended as a
design specification or an
instruction manual for qualified
persons. Electrical designs must
comply with the requirements
of Code to ensure safety.

Energy management,
maintenance, and power quality
issues aren’t within the scope
of the Code.

Consideration should be given

for future expansion of
electrical systems but this is
not a Code requirement.

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Boundary: PEC 1 and PEC 2

Service Point

The PEC 1 does NOT apply

to service drop or service
lateral conductors under
the exclusive control of
the electric utility.

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No more Part Ia and Part Ib;

In A4 size of paper!
Large font size!
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PRBEE Res. No. 18 Series of

2017
❑ Adoption of the 9th Edition of the Revised
Philippine Electrical Code Part 1 as part of
the rules and regulations governing the
practice of electrical engineering and as
referral code in accordance with the
National Building Code.
❑ The resolution was signed by the
Chairman FVM and Member JVM on 10
Nov. 2017.

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PRBEE Res. No. 18 Series of

2017
❑ Approved by the Professional Regulatory
Commission : Chairman Teofilo S. Pilando Jr.,
Commissioner Yolanda D. Reyes and
Commissioner Jose Y. Cueto, Jr.
❑ The resolution and Annex shall take effect after
fifteen (15) days following their full and
complete publication in the Official Gazette.
❑ Date of Publication in the Official Gazette: Nov.
17, 2017.
❑ Date of Effectivity: December 2, 2017.

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Changes in Chapter I
1.0.1.1 (C) 1.0.1.1 (C)
This Code is intended for the
This Code is intended exclusive use of licensed
as a design electrical practitioners. This
Code is not intended as a
specification or an design specification nor an
instruction manual instruction manual for a non-
licensed electrical
for qualified persons. practitioner, unless under the
supervision of a licensed
electrical practitioner.

Chapter 1. General
Article 1.0- Introduction
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Impacts of Art. 1.0.1.1 ©

❑ The Code are now not for exclusive used of
licensed electrical practitioners.
❑ It more accessible even to non-electrical
personnel. Remember : “SAFETY is EVERYBODY
Business”
❑ Qualified Person –One who has qualifications,
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.

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1.0.1.4 Enforcement
(A) This Code is (a) This Code is
intended for mandatory intended for mandatory
application by the Office application by
of the Building government bodies
Official/EE over electrical exercising legal
installations. jurisdiction over
electrical installations.

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1.0.1.4 Enforcement
(B) The Office of the (b) These government
bodies, only through a
Building Official/EE licensed electrical
shall have the practitioner, shall have the
responsibility of implementing
responsibility of of this Code provision in
implementing the deciding on the approval of
provisions of this equipment and for granting
the special permission
Code. contemplated in this Code,
where it is assured the
equivalent objectives can be
achieved by establishing and
maintaining effective safety.

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1.0.1.4 Enforcement
(C) This Code may require (d) This Code may require
new products, constructions, new products, constructions,
or materials that may not yet or materials that may not yet
be available at the time this be available at the time this
Code is adopted. In such Code is adopted. In such
event, the Office of the event, the authority having
Building Official/EE may jurisdiction may permit the
permit the use of the use of the products,
products, constructions, or constructions, or materials
materials that comply with that comply with the most
the most recent previous recent previous Edition of
Edition of this Code adopted this Code adopted by the
by the National Building National Building Code.
Code.

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1.0.1.4 Enforcement
Deleted provision on PEC 2009 Part 1
(c) The authority having jurisdiction may
waive specific requirements in this Code or
permit alternate methods where it is
assured that equivalent objectives can be
achieved by establishing and maintaining
safety.

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Impacts On Enforcement
❑ The Office of the Building Official are given the clear
authority to implement all the provisions of the Code.
❑ Needs for capacity building of the OBO.
❑ BOSH and COSH mandatory to all OBO personnel.
❑ Competency Training on the PEC Part I
❑ IIEE will provide free training for the OBO as part of its
corporate social responsibility and in concerns for public
safety. Others industry stakeholders like MERALCO, VECO,
CEPALCO, and Davao Light can assists in the capacity
building of the OBO.
❑ JVM – ISR.

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1.0.1.6 Interpretation
❑ Interpretation of this Code ❑ Upon the
shall be by licensed electrical
practitioners. In case of recommendation of
conflicting interpretations, the Code Committee,
these may be referred to the Board of Electrical
the PEC Part 1 Committee
for interpretation. Should Engineering shall
disagreement remain, render the final
thereafter, the Committee’s decision in the
interpretation shall be
referred to the Board of interpretation of any
Electrical Engineering who portion of the PEC
shall render the final Part 1, in case of
decision.
controversy.

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Three-Level of Interpretation
A. Licensed Electrical Practitioners
In case of conflicting interpretation/s
B. PEC Part I Committee
For Final Interpretation/s
C. Board of Electrical Engineering

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New Provisions
1.0.1.10 Apprenticeship
(A) RA 7920 or the national electrical
engineering law requires apprenticeship as one
of the qualifications to the registration and
licensure examinations for Registered Master
Electrician (RME), in order to practice electrical
engineering in the Philippines. Knowledge and
understanding of the PEC1 , and PEC2 form part
of the examination given.

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New Provisions
1.0.1.10 Apprenticeship
(B) An apprentice shall undergo training
under a person holding a valid certificate
of registration and a valid professional
license for the practice of electrical
engineering under RA 7920 or the
national electrical engineering law.

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New Provisions
1.0.1.11 Services of Licensed Electrical
Practitioners
For decisions and actions involving a
knowledge of electrical engineering
and/or training in electrical installations
and practices, the services of a licensed
electrical practitioner is required.

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Art. 1.3- Electrical Plans and

Specifications
(F) Design Analysis (F) Design Analysis
Design analysis shall be Design analysis shall be
included on the drawings included on the drawings
or shall be submitted on or shall be submitted on
separate sheets of separate sheets of
standard size, and shall standard size, and shall
show: show:
(1) Branch circuits, sub- (1) Branch circuits, sub-
feeders, feeders, feeders, feeders,
busways, and service busways, and service
entrance; entrance;
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Art. 1.3- Electrical Plans and

Specifications
(F) Design Analysis (F) Design Analysis
(2) Types, rating, and trip (2) Types, rating, and trip
setting of overload setting of overload
protective devices; protective devices;
(3) Calculation of voltage (3) Calculation of short circuit
drops; current for determining
the interrupting capacity
(4) Calculation of short circuit
of overcurrent device for
current for determining
residential, commercial,
the interrupting capacity
and industrial
of overcurrent device for
establishment;
residential, commercial,
and industrial (4) Calculation of voltage
establishment drops.

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Art. 1.3- Electrical Plans and

Specifications
(F) Design Analysis (F) Design Analysis
(5) Protection None!!!!
coordination of
overcurrent protective
devices;
(6) Arc-Flash Hazard
Analysis to determine
the required personal
protective equipment in
other than dwelling
place.
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Impact of Art. 1.3- Electrical

Plans and Specifications
❑ OBO will NOT accept electrical plans
without Technical Analysis.
❑ Mandatory to all electrical plans
❑ All Electrical Practitioners needs to know
the requirements for Technical Analysis

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Highlights of the NEC 2008

❑ Article 2.50 on Grounding and Bonding
▪ In Article 100, grounding and bonding terms have been
redefined and simplified for clarity and improved usability.
▪ Bonded (Bonding) – Revised
▪ Ground – Revised
▪ Grounded (Grounding) – Revised
▪ Grounded, Effectively – Deleted
▪ Grounding Conductor, Equipment (EGC) – Revised
▪ Grounding Electrode – Revised
▪ Grounding Electrode Conductor – Revised
▪ Ungrounded – New
▪ Neutral Point– New
▪ Neutral Conductor - New
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Highlights of the NEC 2008

❑ Article 7.80 Closed-Loop and Programmed Power
Distribution has been deleted.
❑ Four New Articles had been added –
• Article 3.55 Reinforced Thermosetting Resin Conduit:
Type RTRC
• Article 5.22 Control Systems for Permanent
Amusement Attractions
• Article 6.26 Electrified Truck Parking Space
Equipment
• Article 7.8 Critical Operations Power Systems (COPS)

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Highlights of the NEC 2008

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Highlights of the NEC 2008

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Highlights of the NEC 2008

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Highlights of the NEC 2008

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Highlights of the NEC 2008

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Highlights of the NEC 2008

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Highlights of the NEC 2008

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Highlights of the 2011 NEC (Cont’d.)

Highlights of the NEC 2011
Article 110:
110.24 Available Fault Current.
(A) Field Marking. Service equipment in other than dwelling units
shall be legibly marked in the field with the maximum
available fault current. The field marking(s) shall include the
date the fault current calculation was performed and be of
sufficient durability to withstand the environment involved.
(B) Modifications. When modifications to the electrical
installation occur that affect the maximum available fault
current at the service, the maximum available fault current
shall be verified or recalculated as necessary to ensure the
service equipment ratings are sufficient for the maximum
available fault current at the line terminals of the equipment.
The required field marking(s) in 110.24(A) shall be adjusted to
reflect the new level of maximum available fault current.
Exception: The field marking
BOARD requirements inENGINEERING
OF ELECTRICAL 110.24(A) and Philippine Electrical Code Part 1
110.24(B)PROFESSIONAL
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Highlights of the NEC 2011

❑ Three New Articles had been added.
▪ Article 3.99– Outdoor, Overhead Conductors
Over One Thousand V
▪ Article 6.94 – Small Wind Electric Systems
▪ Article 840 – Premises-Powered Broadband
Communication Systems

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Highlights of the NEC 2014

❑ Four New Articles were added:

▪ Article 3.93 Low Voltage Suspended Ceiling
Power Distribution
▪ Article 6.46 Modular Data Centers
▪ Article 7.28 Fire Resistive Cable Systems
▪ Article 7.50 Energy Management Systems

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Highlights of the NEC 2017

❑ Five New Article
▪ Article 4.25 Fixed Resistance And Electrode
Industrial Process Heating Equipment
▪ Article 6.91 Large Scale PV Electric Power
Production Facility
▪ Article 7.6 Energy Storage System
▪ Article 7.10 Stand Alone System
▪ Article 7.12 DC Microgrids

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Components that Create a Fire or

Explosion

In the Installation Rules , one element of the Triangle

of Fire is removed to make the installation safe.

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Why Change the PEC ?

❑ A need is identified!
❑ Changes are necessary for:
▪ Editorial improvements
▪ Improve clarity and usability
▪ Technical revisions
▪ Existing provision became unsafe
▪ New technologies and requirements
▪ New products and equipment

❑ Electrical safety is the deciding factor!

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Why Changes Are Necessary?

❑ Hazards to persons or
property
▪ Fire
▪ Electric Shock
▪ Safety

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Changes are necessary for:

❑ Editorial improvements
❑ Device
▪ A unit of an electrical system that is intended
to carry or control but not utilize electric
energy. (2009 PEC)
▪ A unit of an electrical system that carries or
controls electric energy as its principal
function. (PEC 2017)

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Change Significance
❑ The definition of device has been editorially
revised for usability and clarity.
❑ The revision is intended to clarify that a device
has the primary function of carrying and
controlling electric energy or current.
❑ For example, this revision clarifies that a snap
switch with a pilot light is a device because its
principal function is to carry and control
electrical energy.

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Changes are necessary for:

❑Improve clarity and usability
▪ Bonded (Bonding)- The permanent joining of
metallic parts to form an electrically
conductive path that ensures electrical
continuity and the capacity to conduct safely
any current likely to be imposed. (PEC 2009)
▪ Bonded (Bonding)- Connected to establish
electrical continuity and conductivity. (PEC
2017)

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Change Significance
❑ The revision provides clarity by simply describing
the purpose and function of bonding.
❑ The purpose of bonding is to connect two or
more conductive objects together to:
1. Ensure the electrical continuity of the fault current
path
2. Provide the capacity and ability to conduct safely any
fault current likely to be imposed, and
3. Minimize potential differences between conductive
components.

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PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
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Changes are necessary for:

❑ New Provision
❑ 2.10.1.8(b)(2) –GFCI
Protection Other than
Dwelling (PEC 2017)
▪ 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)

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
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Changes are necessary for:

❑ 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.

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

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Changes are necessary for:

❑ 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

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
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Changes are necessary for:

❑ New Provision
❑ 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

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

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Changes are necessary for:

❑ New Provision-Outdoor receptacle Outlets for One Family
Dwelling

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

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Changes are necessary for:

❑ New Provision

Row Housing with GFCI-protected receptacles located

at the front and the back of each one family dwelling,
as required by 210.52(E)
BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1
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Changes are necessary for:

❑ New technologies and requirements
❑ Arc-Fault Circuit Interrupter

An AFCI is a device intended to open the circuit when

it detects the current waveform characteristics that are
unique to an arcing fault.
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PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
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Changes are necessary for:

❑ New technologies and
requirements
❑ 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.
BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1
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AFCI

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Tamper-Resistant Receptacles
❑ 406.12 All 15- and 20-A 230V nonlocking-type
receptacles in the following areas shall be listed
tamper-resistant receptacles
1. Dwelling Units
2. Guest rooms and guest suites of hotels and motels
3. Child care facilities
4. Preschools and elementary education facilities
5. Business offices, corridors, waiting rooms and the like
in clinics, medical and dental offices and out patient
facilities
6. Places of waiting transportation, gymnasiums, skating
rinks, and auditoriums
7. Dormitories
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Changes are necessary for:

❑ New products and equipment
❑ Resistant Receptacles in Dwellings Unit (NEC 2017-406.12)

Why do you think it is a tamper-

resistant receptacle?

…..To increase safety for children.

…..maybe that your son, daughter, or

grandchildren that you will save…

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Changes are necessary for:

❑ New products and equipment

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Changes are necessary for:

❑ New products and equipment (NEC 2008)

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Changes are necessary for:

❑ Deleted Term
❑ Effectively Grounded
▪ Intentionally connected to earth through a ground
connection or connections of sufficiently low impedance
and having sufficient current-carrying capacity to prevent
the buildup of voltages that may result in undue hazards to
connected equipment or to persons. (PEC 2009)
▪ The definition of the term has been deleted in NEC 2008.
The use of this term is subjective and without defined
values or parameters for one to judge grounding as either
“effective” or “ineffective”.
▪ “Effective” is described in Section 250.4(A) and (B), but it
relates to the effective ground-fault current path as a
performance criterion.

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Changes are necessary for:

❑ New Terms Neutral Point
▪ The common point on a wye connection in a
polyphase system or midpoint of a single –
phase, 3-wire system, or midpoint of a single-
phase portion of a 3-phase delta system, or
midpoint of a 3-wire, direct current system.
▪ This is a new definition for the PEC 2017. The
term “neutral” has been used in the PEC for
many editions but was never defined.

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Changes are necessary for:

❑ New Term
❑ Neutral Conductor- the conductor
connected to the neutral point of a
system that is intended to carry current
under normal conditions.

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Neutral Point & Neutral

Conductor – PEC 2017

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Art. 690.12
❑ No provisions for a rapid shutdown of PV
systems existed in the PEC 2009
❑ A new 690.12 entitled “Rapid Shutdown of PV
System on Buildings” was added in PEC 2017.
This new section applies to PV system installed
on building roofs and would required that PV
source circuits be de-energized from all sources
within 10 seconds or when the utility supply is
de-energized or which the PV power source
disconnecting means is opened.

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PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
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Hazards of Rooftop Solar PV

Firefighters typically use rooftop venting techniques when battling a blaze (Photo courtesy of Matthew
Paiss, San Jose (CA) Fire Department).

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

Meanwhile, in the wake of attention-getting fires
PROFESSIONAL REGULATION COMMISSION
in buildings equipped
2017 Ed. withand
Highlights rooftop
Impacts
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Hazards of Rooftop Solar PV

Firefighters sometimes have to contend with fires within PV system arrays (Photo courtesy of Matt Paiss,
San Jose Fire Department).

Settling for less OF ELECTRICAL ENGINEERING

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Hazards of Rooftop Solar PV

Covering panels with a heavy tarp is one approach that firefighters use to reduce voltage on a PV system
(Photo courtesy of Matthew Paiss, San Jose (CA) Fire Department).

In Stamford, Conn., city officials are considering regulations that would require
BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1
rooftop panels to be spaced in a fashion that
PROFESSIONAL REGULATION COMMISSION would give firefighters
2017 room to and
Ed. Highlights safely
Impacts
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. Author(s): Robert Duval. Published on January 6, 2014. 2 74

1 2 3 4 5 6 7 8 9 Next >

LAST SPRING, PHILIP STITTLEBURG, chief of the fire department in La Farge, Wisconsin, and chair
of NFPA’s Board of Directors, contacted the association about a fire that had recently occurred in his
town. On May 14, 2013, t he La Farge Fire Department responded to an automatic fire alarm at an office
building in its fire district. When the first responding units arrived, they found a fire in a concealed space
within the building. But what may have appeared at first glance as a routine fireground operation turned
out to be anything but ordinary.

Firefighters would soon learn that the building’s concealed spaces were insulated with a recycled cotton-
based denim material that was rapidly consumed by the growing fire, which eventually spread into an attic
space constructed of lightweight wood trusses and equipped with automatic sprinklers. The building’s
pitched roof structure was covered with arrays of photovoltaic (PV) panels that made vertical ventilation
of the attic space by the firefighters nearly impossible.

Over the course of 18 hours, the officers and firefighters from La Farge, along with those from numerous
surrounding departments, were faced with a growing array of challenges, including the location of the fire,
the materials used in the building’s construction, the limitations of the town’s firefighting infrastructure,
and more. The fire would eventually destroy a significant portion of building, resulting in an estimated
$13 million inproperty damage and related losses.

After Chief Stittleburg

BOARD OF contacted NFPA, and
ELECTRICAL Philippine Electrical Code Part 1
as more became known about the details and circumstances
ENGINEERING
of the fire, the more it came to resemble a cautionary tale in the use of "green" or "sustainable"
PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
construction materials and what they can mean to firefighting efforts. The rooftop PV array, designed to
 PRC @ 45 –”NURTURING THE SPIRIT OF PROFESSIONALISM, INTEGRITY, AND EXCELLENCE! 75

The Perfect Storm

LAST SPRING, PHILIP STITTLEBURG, chief of the fire department in La Farge, Wisconsin, and chair
of NFPA’s Board of Directors, contacted the association about a fire that had recently occurred in
his town. On May 14, 2013, the La Farge Fire Department responded to an automatic fire alarm at
an office building in its fire district. When the first responding units arrived, they found a fire in a
concealed space within the building. But what may have appeared at first glance as a routine
fireground operation turned out to be anything but ordinary.

BOARD OF ELECTRICAL ENGINEERING Philippine

Firefighters would soon learn that the building’s concealed spaces Electrical
were insulated with Code Part
1
a recycled
PROFESSIONAL REGULATION COMMISSION 2017 Ed. Highlights and Impacts
J
JULY
ULY 14,
14, 2014
2014 B
BY
Y S
SAL
AL DE
DEPRIS
PRISC
CO
O
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Dietz & Watson Warehouse Blaze

More than 7,000 sol ar panel s on the roof of a burning warehouse in Burl ington County proved too
much of a hazard for firefighters, l ocal official s said today.

“We may very wel l not be abl e to save buil dings that have al ternative energy,” Wil l iam Kramer,
New Jersey’s acting fire marshal l , said after Del anco Fire Chief Ron Hol t refused to send his
firefighters onto the roof of the 300,000-square foot Dietz & Watson facil ity, abl aze since Sunday
afternoon. July 14, 2014

Sol ar panel s are particul arl y hazardous to firefighters for a number of reasons, according to Ken
Wil l ette, a division manager with the National Fire Protection Association.

“There is a possibil ity of el ectric shock because the el ectricity to the panel s can’t be shut off,” he

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New Article
❑ 6.91 Large-Scale Photovoltaic Electric
Power Production Facility
▪ Covers installation of large-scale PV electric
power production facilities with generating
capacity of no less than 5000 kW and not
under exclusive utility control.

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New Article
❑ 6.94 Wind Electric Systems
▪ Applies to wind (turbine) electric systems that consist of
one or more wind electric generators, and their related
alternators, generators, inverters, controllers and
associated equipment.

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New Articles
❑ 7.6-Energy Storage System
▪ Applies to all permanently installed energy
storage systems operating at over 50 volts ac
or 60 volts dc that may be stand-alone or
interactive with other electric power
production sources.

BOARD OF ELECTRICAL ENGINEERING Philippine Electrical Code Part 1

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New Articles
❑ 7.12-Direct Current Microgrids
▪ Applies to direct current microgrids.

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Electric Shock

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Effect of Electricity on Humans

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Effects of AC Electric Shock

Level (in milliamperes) of current through the body

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Human completing the path for current through the earth

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Human in parallel with equipment grounding conductor

during ground fault
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Ground Fault Circuit Interrupter

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Ground Fault Circuit Interrupter

A GFCI is designed to protect persons against electric shock.

It operates on the principles of monitoring the unbalanced current
Between the ungrounded and the grounded neutral conductor.

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Ground Fault Circuit Interrupter

240 - V

240 V – Line Source

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GFCI Protection for Personnel

PEC-2.10.1.8 (a)
a) Dwelling Units
1. Bathrooms
2. Garages
3. Outdoors
4. Crawl spaces at or
below grade level
5. Unfinished
basements
6. Kitchens for
countertop
appliances
7. Wet bar sinks

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Potential Difference

Potential difference between a grounded

Water pipe and an ungrounded motor.
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Potential Difference

Motor ground-fault. A hazard

now exists.

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Potential Difference

The hazard results in an electric shock.

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Potential Difference

Another shock hazard exists.

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Potential Difference

Shock hazard eliminated by installing

a bonding jumper.
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Faults Calculation

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Faults Calculation

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Faults Calculation

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Faults Calculation

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Proper Wiring Method for

230 V Line to Ground System -

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Why hazardous Condition?

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Proper Wiring Method for

230 V Line to Line System -

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From: Handbook of Grounding and Bonding

of Low Voltage Services - MERLACO

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Proper Wiring Starts with the Right

Color Used in Conductor Wiring
120/240 – 208Y/120 – 480Y/277-
V, Single V, Three- V, Three-
Phase Phase Phase
Phase A Black Black Brown

Phase B Red Red Orange

Phase C Blue Yellow

Neutral White White with Gray

Conductor red Stripe
Equipment Green Green Green
Grounding
Conductor
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SAFETY
❑ Unsafe Conditions
▪
▪
▪

❑ Unsafe Acts
▪
▪
▪

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Unsafe Condition

Terminal Box will be subjected to environmental contamination.

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Electrical Room as Storage Room

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Unused Openings

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Hazard Analysis
❑ Identify:
▪ Inspection
▪ Investigation

❑ Evaluate
▪ Maximum Limit
▪ Minimum Limit

❑ Control
▪ Engineering Control
▪ Administrative Control
▪ PPE

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Accessible, Readily
Accessible, Readily

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Accessible, Readily

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Accessible

Accessible (as applied to equipment) – Admitting close approach;

not guarded by locked doors, elevation, or other effective means.

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Accessible

Accessible (as applied to wiring methods) – Capable of being

removed or exposed without damaging the building structure
or finish or not permanently closed in by structure or finish of
the building.

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Within Sight

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In Sight From, Within Sight from

B – A motor controller disconnecting means must be located in

sight from the controller location as required by 430.102(A)

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Qualified Person

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Wiring Methods

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Wiring Methods

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Wiring Methods

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Unused Raceway and

Cable Openings

Unused cable or raceway openings must be

closed with a fitting that provides equivalent
protection.

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Unused Openings

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Integrity of Electrical Equipment

Internal parts of electrical equipment must be covered

to avoid damage from paint or other substances.

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Deteriorating Agents

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Conductor Termination

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2.50.5.5 Bonding for Other Systems

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2.50.5.5 Bonding for Other Systems

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2.50.5.5 Bonding for Other Systems

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2.50.5.5 Bonding for Other Systems

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2.50.5.7 Bonding Other Enclosures

(b) Isolated Grounding Circuits

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2.50.5.7 Bonding Other Enclosures

(b) Isolated Grounding Circuits

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2.50.3 Grounding Electrodes

❑ A violation of Art.
2.50.3.11 which
prohibits using the
same grounding
electrode for a
lightning rod system
and a system supply.

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2.50.5.17 Lightning Protection Systems

❑ Art. 250.5.17
Lightning Protection
System. The bonding
of a system grounding
electrode and a
lightning rod
grounding electrode.

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6.95 Fire Pumps

❑ The general philosophy behind Code articles is
that circuit protection will shut down equipment
before letting the supply conductors melt from
overload.
❑ Art. 6.95 Fire Pumps depart from this
philosophy.
❑ The idea is that the fire pump motor must run,
no matter what; it supplies water to facility ’ s
fire protection piping, which in turn supplies
water to the sprinkler system and fire hoses.

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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

➢ “ It’s 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 Scope
a) Covered
1) Electric power sources and interconnecting
circuits
2) Switching and control equipment dedicated
to fir pump drivers
b) Not Covered
1) 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 Source
1) 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 Sources
1) 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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6.95.1.5 Transformers
❑ Dedicated transformer and overcurrent
protection 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.

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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
concrete
2) 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 Motor
Branch Circuit Conductor Size
From Table
4.30.14.5(b)

Branch circuit conductors to a single fire pump

motor must have a rating not less than 125% of the
motor
FLC as listed in Table 4.30.14.2 or 4.30.14.4
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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 not
drop more than 15% below the controller’s rated voltage.
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6.95.1.7 Voltage Drop

Fire Pump Motor – Voltage Drop

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6.95.1.7 Voltage Drop

Fire Pump Conductor Size – Voltage Drop

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5.47-Agricultural Buildings
EquipotenBal$bonding$requirements$

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EquipotenBal$
ebonding$planes$in$animal$
confinme n t$areas$

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36$
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37$

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35$

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FOR NOT SLEEPING!!!

Q & A!

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