Alex Loew

To calculate likely incident energy from a switchboard is time consuming, onerous, and technical. Variables include voltage, current, fault current, switchboard materials, switchboard opening dimensions and much more. Australian Standards acknowledges this, by virtue of AS4836, which gives a layman, conservative approach to choosing arc flash equipment in table 9.1. It is still always recommended … Read more

What is IEE1584? IEEE1584 is the industry accepted ‘Guide for Performing Arc-Flash Hazard Calculations’. This guide provides mathematical models for designers and facility operators to apply in determining the arc-flash hazard distance and the incident energy to which workers could be exposed during their work on or near electrical equipment. What is NFPA70E? The National … Read more

What on earth is an Arc Flash, and how do I choose the right PPE? Arc Flash clothing and PPE is not an easy product to select. Whilst most electrical PPE (insulated gloves, mats, sleeves) is chosen based on working voltage, Arc Flash is not. Arc flash calculations are complex, time consuming, costly and usually performed … Read more