How to Splice Copper and Aluminum Electrical Wires


By Dave Rongey - Summary:

What is the Best Way to Splice Aluminum and Copper Electrical Wires? How to Splice Copper and Aluminum Electrical Wires.


Copper and Aluminum Wires

Electrical Question: What is the Best Way to Splice Aluminum and Copper Electrical Wires?

I have a lamp with copper wiring that I want to install to my house which has aluminum wiring.
Can I do this, and if so, how? I have read that there are purple wire caps which have a gel inside which will allow the connection – is that correct?

Dave’s Reply:
Thanks for your electrical wiring question Scott.

Splicing Copper and Aluminum Electric Wires

Application: Splice Copper and Aluminum Electrical Wiring.
Skill Level: Intermediate to Advanced – Best performed by a Certified Electrician or Electrical Contractor.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience and ability to work with tools.
Precaution: Identify the circuit, turn it OFF and Tag it with a Note before working with the wiring.
Important: Burnt or damaged wiring and circuit components should be replaced with new electrical materials of the same voltage and amperage rating.
Notice: Repairs to Home Electrical Wiring should be done according to local and national electrical codes and installing new or replacement electrical parts or equipment may require to have a permit and be inspected.

How to Splice Copper and Aluminum Electrical Wires

A splice can be made between copper and aluminum wire using a wire connector that is approved for joining AL/CU wires together and following the approved methods:

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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all projects.

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One Response to “How to Splice Copper and Aluminum Electrical Wires”
  1. Ann says:

    I am putting a new ceiling lamp in my shed. The new one has 3 aluminum wires (black, white & green ground casing). The ceiling has two copper wires & one solid copper line (all inside casings). Is it ok to attach copper & aluminum? Is my green ground (aluminum) good to connect to a solid copper line?
    Many Thanks,
    Ann

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