Electrical installation coursework

Unlike copper, aluminium has a tendency to creep or cold-flow under pressure, so older plain steel screw clamped connections could become loose over time. Newer electrical devices designed for aluminum conductors have features intended to compensate for this effect. Unlike copper, aluminium forms an insulating oxide layer on the surface. This is sometimes addressed by coating aluminium conductors with an antioxidant paste (containing zinc dust in a low-residue polybutene base [14] ) at joints, or by applying a mechanical termination designed to break through the oxide layer during installation.

Electrical installation coursework

electrical installation coursework

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