This means of interruption soon became inadequate and special devices called circuit breakers had to be developed. The basic problem has been to control and quench or extinguish the high power arc, ...

This article is the first in a series of articles that will help to bring light to the maintenance practices presently applied to power circuit breakers. A list of the most popular tests used; with ...

One of the simple yet interesting connection diagrams that young engineers learn in their lab is the staircase lighting setup.

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CREATE DATABASE actually works by copying an existing database. By default, it copies the standard system database named template1. Thus that database is the “template” from which new databases are ...