IEC 60079 Hazardous Area Zone Classifications
Hazardous area is defined in IEC 60079 as an area in which an explosive gas atmosphere is present, or may be expected to be present, in sufficient quantities to require …
IEC 62305 – Protection against lightning
Lightning is a very high-energy phenomenon. Lightning protection is oftentimes taken for granted as the probability of a lightning strike to a structure is low, and damage to properties and …
Lightning Protection – Rolling Sphere Method Accordning to Philippine Electrical Code 2017 Edition
Rolling Sphere Method The Rolling Sphere Method is a popular and acceptable method of implementing lighting protection on structures. In the Philippine Electrical Code, the rolling sphere method is mentioned …
ANSI/IEEE vs IEC Short Circuit Calculations Methodology
The differences between IEC methodology and ANSI/IEEE methodology in calculating short-circuit currents are: 1. DC Decay Component. ANSI/IEEE requires the calculation of a single Thevenin equivalent fault point X/R ratio, …
IEEE & IEC Comparison – Terms & Jargon
COMPARATIVE ELECTRICAL TERMS AND JARGON IEEE Term IEC Term Description AWG/kcmil mm² Electrical conductor/cable size designation Cable Terminator Cable Gland A terminating device for cables at an enclosure • CGB • Stuffing …
Application of Maximum and Minimum Short Circuit Currents as per IEC 60909
IEC 60909 recommends the calculation of maximum and minimum short circuit currents. The article expounds the discussion on the purpose for maximum and minimum short-circuit currents. Maximum short-circuit currents need …