Inspectors have received a number of inquiries recently about the safety of aluminum wiring, many calls coming from home owners considering alternate heat sources such as portable heaters, electric fire places and electric baseboard heating.

Although not commonly used anymore in residential dwellings, aluminum wiring was often installed in homes from the mid 1960's until the late 1970's. Officials in the Electrical Inspection Section of the Department of Communities, Cultural Affairs and Labour say aluminum wiring is safe and is permitted under the Canadian Electrical Code. However, inspectors stress the importance of maintaining proper connections and terminations in older wiring installations.

There have been some reported problems with aluminum wiring related to overheating and failure of the wiring terminations. This can happen as the wiring ages because aluminum has a tendency to oxidize and may not be compatible with devices designed for use with copper wire. As well, inspectors caution that throughout the years, rodents may have used insulation around the wiring for nests, leaving the wires dangerously exposed.

Some homes may have a mixture of aluminum and copper. Each home where aluminum wiring was used will be different and must be assessed individually. Inspectors advise that anyone with concerns about the wiring in a home should contact a qualified Electrical Contractor who is knowledgeable in working with and repairing aluminum wiring.

Questions about aluminum wiring in residential dwellings can be directed to a Senior Electrical Inspector with the Province at 902-368-5280.