Arc-flash – hazards, mitigations and standards
What is Arc-Flash? Arc-Flash is a type of electrical explosion that occurs when an electrical current leaves its intended path and travels through the air from one conductor to another …
How to Protect Your House and Its Contents from Lightning
This IEEE Guide for Surge Protection of Equipment Connected to AC Power and Communication Circuits. Authors: Richard L. Cohen Doug Dorr James Funke Chuck Jensen S. Frank Waterer Surge protection …
IEEE C57.12.00 – Preferred Continuous kVA Ratings of Transformers
The rated kVA of a transformer shall be the output that can be delivered for the time specified at rated secondary voltage and rated frequency without exceeding the specified temperature-rise …
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 …
Paralleling Generator Systems
Electrical Engineers must ensure when designing generator systems that generators and the electrical loads are appropriate for the particular application. Standby power for health care facilities or prime power for …