Our IEE cable sizing was wrote a few years ago and had become rough around the edges. I thought it was time to give the tool a service. Unfortunately when...

Electrical notes are a collaborative collection of electrical engineering information and educational material. Any registered user can add content. ...

Often us engineers get so bogged down in equations, using software, producing drawings and writing specifications that this becomes the sole focus.   ...

IEC 60287 "Calculation of the continuous current rating of cables (100% load factor)" is the International Standard which defines the procedures and equations...

Power factor is the ratio between the real power (P in kW) and apparent power (S in kVA) drawn by an electrical load. The reactive power (Q in kVAr)...

This article gives an introduction to IEEE 485 method for the selection and calculation of battery capacity.

Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...

"I can live with doubt and uncertainty and not knowing. I think it is much more interesting to live not knowing than to have answers that might be wrong...

Everything physical in electrical engineering from insulations to conductors revolves around materials. Here we are listing common materials along with...

The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.