Splicing connectors act as the electrical conductor from the main power source to lights, heat, ventilation, and other uses of electricity in your home. Splicing is joining bare electrical wires and then securing them with wire nuts or compression sleeves. The connection should be tight and insulated.
Copper is the main metal in use for making electrical wires. Previously, aluminum was largely in use for electric wiring. As copper wiring became popular, electricians and homeowners started intermixing aluminum and copper on splicing connectors.
Intermixing different metals on your splicing connectors leads to electrical shorts. Worse still, there is a great risk of causing fires in many homes. To avoid such a hazardous risk, you should replace your electrical wiring with one metal type of wire. Since aluminum is no longer widely used for wiring, replace your aluminum wires with copper wires for your entire home.
The other alternative consists of two products that can help reduce the inherent risks. Experts advize the use of either COPALUM or Alumiconn devices to mitigate the risk. COPALUM is a device that cold-welds the termination points of these two metals. However, COPALUM is not very popular due to the costs and inconvenience involved in its use. Regulations require that you use a certified repairman to do the job. Such repairmen are not easy to find.
On the other hand, Alumiconn is easier to install. Alumiconn, which stands for Aluminum-to-Copper connectors, contains a unique lug design that enables it to separate aluminum and copper wires in a safe and inexpensive manner.