Safety in Design
It is a common sight in the Philippines to see structures, installations, and equipment not compliant with normal engineering standards. Filipino Engineers should be vigilant that safety in design and …
Isolation of Neutral Conductor in Hazardous Areas
IEC 60079-14 (2007) Clause 8.2 Electrical isolation, states that: To allow work to be carried out safely, suitable means of isolation (for example isolators, fuses and links) shall be provided …
Philippine Electrical Code – Working Spaces
Working space generally applies to the protection of the worker. Dedicated equipment space applies to the space reserved for future access to electrical equipment and to the protection of the …
Philippine Electrical Code – Metal Underground Water Pipe as Grounding Electrode
The Philippine Electrical Code allows a Metal Underground Water Pipe as a grounding electrode. 2.50.3.3(A)(1) Metal Underground Water Pipe. A metal underground water pipe in direct contact with the earth …
Advantages of High Resistance Grounding Over Ungrounded Systems
A system grounding or earthing method provides the safety, reliability, and continuity of service required by the electrical power distribution system. In the past, ungrounded systems were preferred when reliability …
Why Use IT Earthing System?
Introduction The standard IEC 60364 have used the following nomenclature to specify types of earthing: First letter – Relationship of the power system to earth: T = direct connection of …