Philippine Electrical Code Part 1/Chapter 1. General/Article 1.2 - Permits And Inspection Certificates

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Article 1.2 - Permits And Inspection Certificates

This is not an official copy of the Philippine Electrical Code. This is a Design Guide according to the provisions of the Philippine Electrical Code. It also provides interpretation and annotations of the clauses of the Philippine Electrical Code. Any information, interpretation and/or annotation presented herein are based on personal opinion of the authors and does not represent the official interpretation of the Philippine Electrical Code.

While the authors have used good faith and efforts to ensure that the information and instructions contained in this work are accurate, the authors disclaim all responsibility for errors or omissions, including without limitation responsibility for damages resulting from the use of or reliance on this work. Use of the information and instructions contained in this work is at your own risk. If any contents or other technology this work contains or describes is subject to open source licenses or the intellectual property rights of others, it is your responsibility to ensure that your use thereof complies with such licenses and/or rights

Note: This is a work in progress...

1.2.1 Electrical Permits Electrical Permit Needed Before Work is Started.

Before starting any installation work, alternation, repair or extension on any electrical system, the owners, lessors, operators, occupants, or licensed electrical practitioners shall obtain Electrical Permit for buildings, trailers, mobile homes, or other premises from the Office of the Local Building Official, and for watercrafts from the Maritime Industry Authority (Marina). In securing the electrical permit, the services of a licensed electrical practitioner is required under the New Electrical Engineering Law (RA 7920)[1].

It is explicitly stated in this clause of the Philippine Electrical Code that the services of a Licensed Electrical Practitioner is required. RA 7920[1] Sec. 31. Field of Practice states the field of practice for professional electrical engineers, registered electrical engineers, and registered master electricians. Requirement for Electrical Permit: Signatures and submittals.

(a) The Electrical Permit shall include the following minimum information:

1. Applicant.
2.Professional Electrical Engineer who signed and sealed electrical plans and specifications.
3. Licensed Electrical Practitioner who is in-charge of electrical works.
4. Building Owner.
5. Lot Owner.
6. Building Official

(b) Five (5) sets of complete electrical plans and specifications signed and sealed by Professional Electrical Engineer. Electrical Permit to Be Issued Immediately.

(a) The application, upon receipt, shall be checked immediately by the local building official or his representatives for compliance with the requirements. If complying, the Electrical Permits shall be issued upon payment of the corresponding electrical fees.

(b) If the project is extensive and required more time for checking and for computations of fees, the issuance of the Electrical Permit need not be issued immediately. The delay shall not be longer than five (5) working days after which time application together with the accompanying plans shall be considered as complying with all the requirement and the electrical permit shall be issued immediately thereafter. Posting of Electrical Permit.

A copy of the Electrical Permit, upon issuance, shall be posted at a conspicuous location at the job site and shall not be removed until final inspection and approval of the work shall have been made.

Licensed Electrical Practitioner in-charge of the design, and the licensed electrical practitioner in-charge of the installation shall post a copy of their respective Professional Regulation Commission (PRC)[2] identification card together with the electrical permit at all times.

1.2.2 Electrical Inspection Application for Inspection.

An application for inspection shall be filed with the government authority concerned before a preliminary and/or final inspection is done. Certificate of Inspection.

No electrical installation, alteration, and/or addition shall be connected or reconnected to any power supply or any other source of electrical energy without a Certificate of Final Electrical Inspection/Completion obtained from the local building official signed by their respective licensed electrical practitioner.

1.2.3 Special Temporary Installation.

For temporary electrical installation, the same procedure as stated above shall be followed. At the end of the period covered by the certificate of inspection, the temporary installation shall be removed. Extended use of the temporary installation shall require a new approval electrical permit. Special Permission Required.

Electrical equipment and wiring not specifically covered or mentioned in the various articles of this Code shall require special permission and written approval of a licensed electrical practitioner under the enforcing government authority concerned, prior to installation. Reconnection of Disconnected Services.

In cases where service has been cut off for more than one (1) year, a new certificate of final electrical inspection shall be required before reconnection.

1.3.1 General Drawing Sheet Sizes.

(a) Electrical plans and drawings shall be drawn on drawing sheets of the following standard sizes:

760 mm x 1 000 mm
600 mm x 900 mm
500 mm x 760 mm

(b) In cases such as projects of large magnitude, exemption in the use of the standard drawing sheets may be granted by the office of the local building official. Refer to Appendix E.

(c) For a dwelling unit having a floor area of not more than 50 square meters with a total load not exceeding 3 680 VA, a drawing sheet of size 297 mm x 420 mm (A3 size) is permitted.

With the advent of computer aided design, drawing sizes may change. Drawing Scale.

Appropriate metric drawing scales shall be used. Graphic Scale.

Since the size of the drawing sheet can be changed photographically, graphic scale shall be shown on each drawing sheet.

FPN: Graphic scale denotes nominal or average plan scale and remains true when plans are photographically reduced.

1.3.2 Plans and Specifications Plan Requirements.

(a) Location and Site Plans.

Location and site plans, with proposed e. Others structure and owner’s land drawn to appropriate metric scale shall show:

(1) Bordering areas showing public or well-known streets, landmarks and/or structures which need not be drawn to scale unless they extend into the area concerned;
(2) Location of service drop, service equipment and nearest pole of the utility company furnishing electrical energy; location of the meter as well as sizes of service entrance wires, conduits and service equipment; and
(3) Clearance of the path or run of service drops and entrance wires to adjacent existing and/or proposed structures.
(b) Legend or Symbols.

Refer to Appendix A – Electrical Symbols

(c) General Notes and/or Specifications.

General Notes and/or Specifications, written on the plans or submitted on separate standard size sheets shall show:

(1) Nature of electrical service, including number of phases, number of wires, voltage and frequency;
(2) Type of wiring;
a. Service entrance
b. Feeders, sub-feeders and branch circuit wires for lighting and/or power load
c. Fire alarm system, if required by law
d. Signaling and communication
(3) Special equipment to be installed, indicating ratings and classification of service or duty cycle of;
a. Rectifiers
b. Heaters
c. X-ray apparatus
d. Electric welding equipment
e. Others
(4) System or method of grounding;
(5) Type and rating of main disconnecting means, overcurrent protection (OCP) and branch circuit wiring;
(6) Clearances of service drop, burial depth for service lateral, mounting height and clearance for service equipment, mounting height and clearance for kWh meter.
(d) Electrical Layout.

Floor plan showing location of equipment and devices, and their interconnection wiring.

(1) Plan for Power.

Layout and wiring plans for power on the floor plans drawn to scale, shall show:

a. Sizes and location of service entrance conductors, raceways, metering equipment, main switchboard, layout of feeders and distribution panels or switches and their sizes, types and ratings;
b. Complete circuits of motors and other electrical equipment, their controlling devices, their locations and ratings;
c. Complete wiring of emergency power system, if any;
d. Nature of processes/activities carried out in each room or area

FPN: In residences, apartment houses and small commercial establishments, layout of equipment and motors of one horsepower or less may be incorporated in the layout for General Lighting and Receptacle Outlets. In general, layout of motors and power outlets not exceeding a total of ten, may be included in the lighting layout provided such inclusion will not make reading, interpretation and/or checking of said plan difficult.

(2) Plan for Lighting and Receptacle Outlets.

Layout and wiring plans for general lighting and receptacle outlets on floor plans drawn to scale, shall show:

a. Location, type and rating of lighting fixtures, indicating illumination in lux in each room or area. In residences, hotels, apartment houses, and churches, the illumination level in each room or area need not be shown nor computed;
b. Location of switches for each fixtures or group of fixtures;
c. Location of receptacle outlets and appliances to be served and their ratings;
d. Complete circuits of the lighting and receptacle outlets;
e. Complete wiring of emergency lighting system, if any;
f. A separate drawing showing layout of receptacle outlets may be made at the discretion of the design engineer.
(3) Plan for Fire Alarm Circuits.

Layout and wiring plans of fire alarm station, fire alarm bell, fire alarm control panel, and other shall be drawn to scale and show:

a. Location of outlets, equipment and/or apparatus and controls;
b. Complete circuit showing no. and size of raceway and wire;
(e) Schedule of Loads.

Schedule of load in tabulated form shall indicate:

(1) Motor Loads;
a. Motors as numbered or identified in power layout
b. Type of motor
c. Horsepower/kilowatt/kilovolt ampere rating
d. Voltage rating
e. Full-load current rating
f. Frequency rating other than 60 hertz
g. Number of phases
h. Type and size of wiring
i. Protective device rating
(2) Lighting and Receptacle Loads;
a. Panel as numbered in the feeder diagram
b. Circuit designation number
c. Number of lighting outlets in each circuit
d. Number of switches in each circuit
e. Number of receptacles outlets (convenience outlets)
f. Voltage of circuit
g. Type and size of wiring
h. Protective device rating
(3) Other Loads.
a. Designation number on plan
b. Description of load
c. Classification of service duty, if required
d. Rating of kilovolt-ampere or kilowatt
e. Phase loading indicating full load line current
f. Voltage rating
g. Type and size of wiring
h. Protective device rating
(f) Design Analysis.

Design analysis shall be included on the drawings or shall be submitted on separate sheets of standard size, and shall show:

(1)Branch circuits, sub-feeders, feeders, busways, and service entrance;
(2) Types, ratings, and trip settings of overload protective devices;
(3) Calculation of short circuit current for determining the interrupting capacity of overurrent protection device for residential, commercial, and industrial establishment;
(4) Calculation of voltage drops.
(g) One Line Diagram.

One line diagram shall indicate:

(1) Lighting and Receptacle Outlet Loads;
a. Single line or schematics diagram of lighting and receptacles panelboards showing mains and branch circuit rating;
b. Size of conductors for feeders.
(2) Motor Loads;
a. Rating in kilowatts/horsepower/kilovolt ampere
b. Full load current
c. Locked rotor current
d. Phase connection for 1-phase motor on a 3-phase system
e. Rated voltage
f. Type and size of wiring, indicating load in amperes
g. Electric motors shall be numbered consecutively to correspond to their numbers in the layout
(3) Feeders and Subfeeders;
a. Identification and/or labeling of feeders and subfeeders
b. Size and type of wires and raceway
c. Protective devices and controls
d. The allowable ampacity of the conductor over the designed load current in amperes expressed as a ratio and indicated along side the conductor
(4) Load Center.
a. Identification and/or labeling of load center showing type and rating of transformer, switches, circuit breaker and other related devices
b. Incoming and outgoing feeders, type, size and voltage
c. Equipment grounding Title Block.

Title block or nameplate of plans and drawing shall be a standard strip of 40 mm high at the bottom of the sheet. It shall contain the following:

(a) Name and location of installation or project;

(b) Name, signature and address of owner/manager/operator;

(c) Title of sheet;

(d) Name, signature and seal of Professional Electrical Engineer together with Professional Regulation Commission professional license number and validity, Professional Tax Receipt Number, and Tax Identification Number;

(e) Scale used, date drawn; and

(f) Sheet number. Other Details.

(a) Exposed conductors shall show:

(1) Means of support and types of insulators; and
(2) Spacings and clearances.

(b) Auxiliary gutters, wireways, busways, cabinets, boxes, metallic raceways, underground installations, other than specified in the Code shall show:

(1) Installation details;
(2) Conductor supports, separators, and attachments where required by this Code; and
(3) Dimensions and description or specifications.

(c) Private pole installations shall show:

(1) Construction and installation details and dimensions;
(2) Pole top wiring details including line hardware; and
(3) Guying details.

(d) Low energy power and low voltage power installation shall show:

(1) Details of battery installation and/or other source of low voltage or low energy power;
(2) Equipment, wiring, actuating mechanism and protective devices; and
(3) Ventilation details whenever necessary.

1.3.3 Substation Plans and Specifications Indoor Substation.

Indoor substation plans shall show:

(a) Location and dimensions of;

(1) Substation in building plan drawn to scale,
(2) Building with respect to entire compound or property,
(3) Incoming and outgoing lines, and
(4) Windows, doors, and other openings.

(b) Substation structural requirements;

(1) Materials and construction of walls, floors, roof, windows, enclosures, doors, and their dimensions, and
(2) Ventilation and drainage systems and other safeguards.

(c) Substation electrical requirements such as;

(1) Plan view showing location and sizes of equipment installed,
(2) Clearances and spacings between exposed current-carrying and noncurrent-carrying portions and grounding equipment, and
(3) Grounding system.

(d) Cross sectional views showing;

(1) Horizontal and vertical clearances between exposed parts and adjacent surfaces,
(2) Horizontal and vertical clearances of exposed parts from floor/ceiling,
(3) Finished floor level and ground level.

(e) Miscellaneous;

(1) Specification of equipment,
(2) Wiring of lighting and remote control systems,
(3) One-line diagram(s) of entire installation with voltage indicated,
(4) Computations on size of wires, busbar, transformer, fuses, switches and breaker, and
(5) Class of insulation or insulators. Outdoor Substation.

Outdoor substation plans shall show same items as indoor substation except that in lieu of walls and roof, details of fence and supporting steel structure shall be shown in accordance with the latest edition of the Philippine Electrical Code, Part 2.

Other Pages in this Category: Chapter 1. General


  1. 1.0 1.1 RA 7920
  2. Professional Regulation Commission