Philippine Electrical Code Part 1/Chapter 1. General/Article 1.0 - Introduction. Compliance therewith and proper maintenance will result in an installation that is essentially free from hazard but not necessarily efficient, convenient, or adequate for good service or future expansion of electrical use.

This is not an official copy of the. This is a Design Guide according to the provisions of the. It also provides interpretation and annotations of the clauses of the.

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. 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. The primary purpose of the Philippine Electrical Code is to minimize the risk of electricity as a source of electric shock and as a potential ignition source of fires and explosions; and to minimize the propagation of fire and explosions due to electrical installations. (b) Adequacy. This Code contains provisions that are considered minimum requirements necessary for safety.

Compliance therewith and proper maintenance will result in an installation that is essentially free from hazard but not necessarily efficient, convenient, or adequate for good service or future expansion of electrical use. 1: Hazards often occur because of overloading of wiring systems by methods or usage not in conformity with this Code. This occurs because initial wiring did not provide for increases in the use of electricity. An initial adequate installation and reasonable provisions for system changes will provide for future increases in the use of electricity. FPN No 2: It is highly recommended that a licensed electrical practitioner be consulted for any electrical requirements, including changes.Failure to do so may result in fire, serious injury, or death.

3: Fire hazard, electrocution, serious injury or even death may also occur with lack or improper maintenance of wiring system. Wiring system is recommended to be inspected and tested by a licensed electrical practitioner at least once a year for wiring system of more than three (3) years in installation. Future expansion should always be given consideration when designing any electrical system. Future expansion may be unlikely in some new installations, but most of time, it is wise to plan an initial installation that allows for future additional loads, modifications, or designs. Ratings of conductors, switchboards and/or transformers need to be selected properly given these considerations without sacrificing initial cost. (c) Intention. This Code is intended for the exclusive use of licensed electrical practitioners (PEE, REE, and RME).

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This Code is not intended as a design specification nor an instruction manual for a non-licensed electrical practitioner, unless under the supervision of a licensed electrical practitioner. The Philippine Electrical Code is intended for use by • Qualified engineers in the design, installation and/or maintenance of electrical equipment; • Inspection authorities having legal jurisdiction over electrical installations; • Insurance inspectors; • Electrical practitioners; and • Instructors of electrical students. (d) Relation to Other International Standards. The requirements in this Code address the fundamental principles of protection for safety contained in Section 131 of International Electrotechnical Commission Standard 60364-1, Electrical Installations of Buildings. The Philippine Electrical Code (PEC) is a modified version of the National Electrical Code. The modifications were made to suit the local Philippine environment and conversion into the SI system. This section of the Philippine Electrical Code makes it clear that the Philippine Electrical Code is compatible with international safety standards and address the fact installations meeting the requirements of the Philippine Electrical Code are also in compliance with the fundamental principles outlined in NEC.

IEC 60364-1, Section 131 131 Protection for safety 131.1 General The requirements stated in 131.2 to 131.7 are intended to provide for the safety of persons, livestock and property against dangers and damage which may arise in the reasonable use of electrical installations. The requirements to provide for the safety of livestock are applicable in locations intended for them. In electrical installations, the following hazards may arise: – shock currents; – excessive temperatures likely to cause burns, fires and other injurious effects; – ignition of a potentially explosive atmosphere; – undervoltages, overvoltages and electromagnetic influences likely to cause or result in injury or damage; – power supply interruptions and/or interruption of safety services; – arcing, likely to cause blinding effects, excessive pressure, and/or toxic gases; – mechanical movement of electrically activated equipment.