Invented by Humphrey Davy in the early 19th century, arc lamps were developed in France until 1878 when R E B Crompton started to manufacture an improved version at his Arc Works in Chelmsford.

As a result of the arc flash, Belmont High School ... In a statement, Belmont Light said: "Our thoughts are with the two line workers as we hope for their speedy recovery from today’s incident.