Aluminum Winding Wire almost always costs less than copper wiring. It’s not uncommon for aluminum wiring to cost just half the price of copper wiring. For a residential home, using aluminum wiring instead of copper wiring can save builders several hundred dollars. For a commercial building, the cost-savings benefits of aluminum wiring can be thousands of dollars.

Advantages of aluminum wiring:

Various Advantages of Aluminium winding are listed below:

Less Cost

Aluminium costs a lot less than copper and thus brings commercial advantages.

Corrosion resistive

Aluminium has a very thin layer of oxides on the surface, which stops air and water getting to the metal, resisting corrosion.

Conductivity

the conductivity of copper is stronger, pound for pound aluminium proves to be almost double as effective a conductor.

More Flexible

Aluminium is more flexible than copper making it easier to wind in production processes.

lower eddy losses

The higher resistivity of aluminium gives inherently lower eddy losses in the windings. This mitigates the risk for hot spots.

Disadvantages of aluminum wiring:

Aluminum conductors are going to be larger than that of a comparable copper conductor. This requires having larger raceways and added cost. In some systems this could prove to be a disadvantage over copper.

Aluminum wiring raises potential risk for house fires if not installed with great care and diligence. Expansion and contraction cycles in aluminum have greater impact compared to use of copper. Overtime these cycles can loosen connections. If normal inspections of these connections are not performed and loose connections are not tightened there is an increased risk of fire from arching.

Aluminum is susceptible to oxidation. This occurs when it comes into contact with moisture and dissimilar metals. The oxidization increases resistance in this connection. With too much built up resistance the wire can heat up possibly melt surrounding insulation which could trigger a fire.

This is combated with anit-oxidation compound at each terminal point.

Aluminum wires require higher maintenance than copper wiring. This includes inspection of the conductors for tight connections and presence of oxidation.

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