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Hunter Koch

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Articles by Hunter Koch

Consulting-Specifying Engineer most-viewed content, October 2023 | Consulting - Specifying Engineer

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By Anna Steingruber, Hunter Koch, Lilly Vang, Joshua Hunter
| Consulting-Specifying Engineer Verified
Read the best content in October 2023 including: Mitigating arc flash hazards, NFPA 101, low-GWP refrigerants and sprinkler design requirements Read the best content in October 2023 including: mitigating arc flash hazards, NFPA 101, low-GWP refrigerants and sprinkler design requirements Mitigating arc flash hazards in medium-voltage systems could be performed in synergy to achieve optimal system reliability and safety Important changes in the 2024 edition of NFPA 101 include modular rooms,...
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Case study: Hospital tower requires arc energy reduction | Consulting - Specifying Engineer

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By Hunter Koch, Lilly Vang, Joshua Hunter, Brian Rener
| Consulting-Specifying Engineer Verified
The project design for a new hospital bed tower will include a new normal power utility service and a new generator system with associated normal and emergency branch panels to serve the building. The new building will use a 480/277-volt, 3-phase, 4-watt plus ground service from the utility. The goal of this example is to design the arc energy reduction system for the electrical equipment over 1,200 amps that is required by NFPA 70 (2023): National Electrical Code to have arc energy reduction.
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Superior designs achieve arc flash safety in building electrical systems | Consulting - Specifying Engineer

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By Lilly Vang, Joshua Hunter, Brian Rener, Hunter Koch
| Consulting-Specifying Engineer Verified
Arc flash analysis is an important piece of designing electrical systems, especially in large amperage and utility service equipment applications Learning Objectives Gain an understanding of what arc flash is, what can cause it and why it is dangerous if not considered properly in design. Review the code dictated safety requirements, such as working areas, key terms and personal protective equipment guidelines.
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