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If you have an older home built prior to the 1970s, your home’s wiring may be a safety concern.

Although both knob and tube wiring and aluminum wiring were common in-home construction years ago, copper wiring is now the standard – and for good reason. The older types of wiring are unlikely to be covered by many home insurance policies due to their fire hazards.

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Knob & Tube Wiring and Electrical Hazards

Used in home construction prior to the 1950s, knob and tube wiring is considered to be the most dangerous form of electrical wiring.

Knob and tube wiring’s simple, two-wire system lacks a ground wire which leads to an increased risk of shocks. Overheating, arcing and short-circuiting can occur due to ineffective installations or from the breakdown of wires and rubber coating.

Aluminum Wiring and Electrical Hazards

Like knob and tube wiring, aluminum wiring is of greater risk than the copper wiring found in today’s new construction.

Commonly used throughout the 1960s and 1970s, aluminum wiring has been the cause for many fires and deaths.

Replacing Your Home’s Wiring

Upgrading your home’s wiring is best done during renovations due to its extensive involvement. The cost for upgrading to copper wiring depends on the number of circuits and wiring involved, as well as the difficulty in accessing those wires.


If you are able to get home insurance coverage with knob and tube or aluminum wiring, then you may not need to get it replaced. However, an annual inspection by a qualified electrician is suggested to ensure it remains in a satisfactory and safe condition.

Our Hamilton Electricians Provide the Solution

Depending on the state of your home’s wiring, we may suggest rewiring your home. If that’s the case, we will complete the rewiring with as little disruption as possible. Even better? We’ll manage the required inspection with the Electrical Safety Authority, too.

Want to ensure your home, business or farm’s wiring is up to standard? At Groves Electric, we are experienced with knob and tube wiring and aluminum wiring. Let us provide a free on-site estimate to upgrade your wiring today!


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