A build up of particles caused by the collision of a high energy particle with any other form of matter. [Note: The term is derived from the avalanches occurring in a mountain]

This is the maximum current, which the fuse will carry for an indefinite period without undue deterioration of the fuse element.

Insulation comprising both basic insulation and supplementary insulation.

This is the minimum current that will cause the fuse element to heat up melt or blow

Excess firm energy available from a utility or region for which there is no market at the established rates.

Average value of the infinite number of measurements, when the average deviation tends to become zero.

An assembly made up of cable or busbars and parts which secure and, if necessary, enclose the cable or busbars.