Philippine Electrical Code – Acceptable Practice
Electrical Engineers – Do you really care? Electrical installation of this kind is all over Metro Manila and probable in some other major cities in the Philippines. Are these building …
IEEE Transformers Categories
There are four (4) categories of transformers according to IEEE Std. C57.12.00 – IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers. Categories of Transformer Rating Category …
Philippine Electrical Code – Equipment Grounding and Equipment Grounding Conductors
What is difference between grounding and bonding? Bonding is the electrical connection of all exposed metal items not designed to carry electricity in a room or building. Grounding is the …
The Effect of Earthing Methods
Earthing the System Neutral Most earthed systems employ some method of earthing the system neutral at one or more points. Effectively Earthed System A system is effectively earthed when the …
Normative and Informative Annexes Compliance
The terms ‘normative’ and ‘informative’ are commonly used in IEC and other derivative standards to define applications of annexes. A normative annex is an integral part of a Standard which …
Philippine Electrical Code – Number of Supplies
Section 2.25.2.1 of the Philippine Electrical Code specifies that incoming supply to a building or other structure shall be supplied by only one feeder. 2.25.2.1 Number of Supplies. Number of …