English Engineering
Original English engineering guides on electrical power systems, data centers, cables, protection, renewable energy and practical design.
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Arc Flash Risk Assessment: Why Fault Current Alone Does Not Define Incident Energy
A practical arc-flash risk-assessment guide explaining why fault current alone does not define incident energy, how clearing time changes exposure,…
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UPS Sizing for Data Centers: A Worked Capacity and Runtime Example
A transparent UPS sizing example covering critical load, growth, redundancy, efficiency, runtime and battery assumptions.
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A/B Power Paths in Data Centers: Redundancy Without Hidden Common Points
How to review A/B power paths, dual-corded racks, static transfer switches and hidden common-mode failures.
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Data Center Electrical Losses: From Utility Meter to Rack Input
A boundary-based method for tracing transformer, UPS and distribution losses without confusing PUE and component efficiency.
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Single-Point Cable Sheath Bonding: Purpose, Limits and Design Inputs
A design-level explanation of single-point sheath bonding, standing voltage, earthing and required project inputs.
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Both-End Bonding of Cable Sheaths: Circulating Current and Rating Impact
Why solid bonding controls sheath voltage but can create circulating current, losses and cable-rating penalties.
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Cross-Bonding of HV Cable Sheaths: Major Sections and Transposition Logic
How three minor sections form a major section and why cross-bonding aims to cancel induced sheath voltages.
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Sheath Voltage Limiters in HV Cable Systems: What the Design Must Prove
A design overview of SVL purpose, voltage and energy duties, earthing, placement and maintenance evidence.
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HV Cable Link Boxes: Inspection Questions for Bonding-System Reliability
A non-invasive inspection framework for link boxes, bonding leads, earthing, moisture and documentation.
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Data Center Power Distribution Best Practices: A Practical Design Checklist
A practical checklist for utility service, switchgear, UPS, generators, PDUs, redundancy and future data center loads.
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