Reference
Tables generated at build time from physical definitions and formulas. Each page shows how its table is generated. Standards are cited by clause only; their tables are not reproduced.
- AWG / kcmil to mm² →
Cross-section, diameter and nearest IEC 60228 size, generated from the AWG geometric definition.
- Conductor Resistance →
Copper and aluminum DC resistance by temperature, Ω/km and Ω/kft, with mass per length.
- Full-Load Current →
kW / HP / kVA to amperes for single- and three-phase systems at representative voltages.
- Voltage Systems →
Nominal system voltages and frequencies by country, with pointers to the governing standards.
- Wire Colors →
Conductor identification colors by country and system.
- Unit Conversions →
HP/kW, ft/m, lb·ft/N·m, mil/mm and circular mils.
- Glossary (EN ↔ KR) →
Searchable English–Korean electrical terminology.
- Insulation Resistance Temperature Correction →
The principle and formula behind temperature-correcting IR readings.
- NEMA vs IP Enclosures →
How NEMA enclosure types relate to IP ratings, explained in our own words.
- ANSI Device Numbers →
About thirty commonly used protective relay device numbers.
- Standard Ratings →
Common fuse, breaker and transformer kVA ratings.
- Code Pointers
Which standard and clause to consult for a given situation. Pointers only.
Grade G: physics, geometry and our own writing. Grade Y: facts compiled by standards bodies, described in our own words with attribution. Grade R: pointers only.