Low Voltage Three Phase AC Motors Protection – Part 1
This article will be divided into several sections to discuss the control of three (3) phase AC motors including protective features available for the control of starting and operating this …
PEC Requirements for Design Analysis Report
Before starting any works on any electrical system, the owners shall obtain an Electrical Permit from the Office of the Building Official (OBO). In securing the electrical permit, the services …
Determining the required sizes of earthing conductors and earth electrodes
The sizes of earth conductors and earth electrodes are almost always chosen from typical sizes as provided by a particular project standard. If using non-typical sizes can extensively impact the …
Time-Current Curves Using Excel
This tutorial serves a guide for the creation of time-current curves using Excel 2013. The user is expected to have at least an intermediate level of knowledge in the usage …