Reference
Technical resources
Reference material for specifying distribution equipment, free to use and cite, with nothing to buy on this side of the site.
Each resource states its sources and the date it was checked. Where a value is calculated the method is shown, and where a value is law the regulation and table are named, so every figure can be verified independently.
Resources
kVA and amps calculatorConvert between apparent power, real power and rated current, for single phase and three phase systems.Which standard governs which equipmentA distribution project is governed by several documents at once, and the common error is applying the right standard to the wrong object.Maximum losses for distribution transformers on the EU marketThe Tier 2 load and no load loss ceilings that three phase medium power transformers must meet, as set out in Regulation (EU) No 548/2014 as amended.How a transformer rating is decidedA working method for arriving at a rating, and the two factors that most often make a first estimate wrong.