![]() How are you addressing labelling of empty MCC spare bucket sections which are larger than a single bucket? If there is voltage below or equal to 240 V present in the cabinet and the available short-circuit current is equal or above 2 kA, yes. ![]() If there is voltage above 240 V present in the cabinet, yes. The arc flash study could be applied to SF6 panel enclosed? See the sensitivity analyses in the presentation PDF. The energy changes alot when compared to the 2002 version. There is not enough energy to sustain an arc.Īre there many changes in incident energy or is it roughly the same? Since there is no arc flash danger at this level, no cal or af boundary needs be specified. What Cal and AF boundary shall be label equipment that is 240v nominal or less with less than 2000a short circuit current? What is the electrode configuration if it is fuses? Typical dimensions can be found in IEEE 1584-2018 tables or in the EasyPower default library. For conservative assumptions, use small enclosure sizes. Worst-case results are obtained with smaller enclosure sizes. When barrier dimensions can't be practically measured (maybe due to lack of access) would there be some conservative assumptions for measurements based on configuration/voltage level/etc.? Or would the differences in sizes necessitate accurate measurements of enclosure? Is this assumption stated in the standard or a practice you're recommending? You mentioned using a 2s assumption for the main service entrance equipment due to assumption the utility can change their upstream protective device without notice. ![]() Download a Free Demo Simon's Presentation (PDF)ĭownload Presentation Answers to Q&A Following Live Webinar Question
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