Newage aluminium conductors are manufactured and tested accordance with British standard specification No. 215 Part 1: 1970. Wapda spac P63: 79, ASTMP 231 or Din 48201.

DEFINITIONS

SOLID CONDUCTOR. A conductor of one circular wire.

STRANDED CONDUCTOR. A conductor consisting of more than one aluminium wires twisted together in concentric layers. When the conductor consists of more than one layer, successive layers are twisted in opposite directions.

DIAMETER. Mean of two measurements at right angles taken at the same cross-section.

DIRECTION OF LAY. The direction of lay is defined as right hand or left hand. With right hand lay, the wires shall conform to the direction of the central parts of letter ‘z’ when the conductor is held vertically. With left hand lay, the wires conform to the direction of the central part of the letter ‘S’ when the conductor is held vertically.

LAY RATIO. Ratio of the axial length of a complete turn of the helix formed by an individual wire in a stranded conductor to the external diameter of the helix.

STANDARDS FOR HARD DRAWN ALUMINIUM WIRE

RESISTIVITY. The resistivity of aluminium wire depends upon its purity and its physical condition. The standard maximum value permitted is 0.028264 Ω/mm²/m at 20°C, and this value shall also be used as the standard resistivity for the purpose of calculation.

DENSITY. At a temperature of 20°C, the density of hard-drawn aluminium wire is to be taken as 2.703 g/cm³.

COEFFICIENT OF LINEAR EXPANSION. The coefficient of linear expansion of hard drawn aluminium is to be taken as 23 x 10⁻⁶ / °C.

CONSTANT-MASS TEMPERATURE COEFFICIENT. At a temperature of 20°C, the constant mass, temperature coefficient of resistance of hard-drawing aluminium wire measured between two potential points rigidly fixed to the wire, is taken 0.00403/°C.