In vacuum circuit breakers, the contacts are also generally copper, mixed with tungsten and specially shaped to ensure proper distribution of the electric field and movement of the arc root. Smaller ...

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 ...

Compiled by the Official Charts Company, the UK's biggest independently-released albums of the week by an artist who has not yet reached the Top 40, based on sales of digital bundles, CDs, vinyl ...

Sure, the calendar said March 20 was officially the first day of spring, but like any other year, I paid no attention to that designation. Neither, too, do many wildlife species. Spring isn’t a date ...

A Minnesota DNR proposal that would increase late-season duck-hunting opportunities in the state’s south zone this fall is pending approval by the DNR commissioner’s office. Under the proposal, the ...