Home>Discussions>ELECTRICAL & LIGHTING>Connecting new copper wire to old aluminum wire
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JLMCDANIEL
Re: Connecting new copper wire to old aluminum wire

I've seen them advertised but as far as I know they were never approved.
Jack

Re: Connecting new copper wire to old aluminum wire

You made me google it Jack.

http://www.idealindustries.com/products/wire_termination/twist-on/twister_al-cu.jsp

Doesnt say weather it requires pretwisting or not but I would.

I know using a regular wirenut and nolux isnt really considered an "excepted method" but I been doin it for years and I am comfortable with it. besides the depth of these and that little skirt I dont see much difference.

Another thing I have noticed over the years when you find a "fail" in an aluminum splice, that doesnt involve a device, you can usually see where it was "gouged" when it was stripped.. like someone dug there dykes in it too far stripping it.

I also use nolux on devices when its aluminum, not to mention sidewinding, clamping the loop closed around the screw all the way, and using a slotted screwdriver to make sure its as tight as you can get it.

but your results may vary.

Ernie_Fergler
Re: Connecting new copper wire to old aluminum wire
Lloyd wrote:

You made me google it Jack.

http://www.idealindustries.com/products/wire_termination/twist-on/twister_al-cu.jsp

Doesnt say weather it requires pretwisting or not but I would.

I know using a regular wirenut and nolux isnt really considered an "excepted method" but I been doin it for years and I am comfortable with it. besides the depth of these and that little skirt I dont see much difference.

Another thing I have noticed over the years when you find a "fail" in an aluminum splice, that doesnt involve a device, you can usually see where it was "gouged" when it was stripped.. like someone dug there dykes in it too far stripping it.

I also use nolux on devices when its aluminum, not to mention sidewinding, clamping the loop closed around the screw all the way, and using a slotted screwdriver to make sure its as tight as you can get it.

but your results may vary.

I have never made up an cu/al splice in my life, but I too would pretwist the connection as well. {But I pretwist every connection possible}. Aluminum cable was just not used in place of say 12/2 copper Romex, in these parts.
I also agree that a wire nut & OX-Guard on a pretwisted connection is the same product made by Idea Industries. And would not hesitate to make up that connection.:D

Ernie_Fergler
Re: Connecting new copper wire to old aluminum wire
JLMCDANIEL wrote:

I've seen them advertised but as far as I know they were never approved.
Jack

According to an Ideal PDF I was researching last night {for something else, of course}, they are an approved method.
"Complies with NEC Sec. #110-14{b} for a aluminum to copper connection. Just thought I would pass that tidbit on".:rolleyes:

JLMCDANIEL
Re: Connecting new copper wire to old aluminum wire

I knew they had CSA approval, but hadn't seen them listed by U.S. Consumer Safety. Their lit does say they are UL approved so I may stand corrected.
Jack

Ernie_Fergler
Re: Connecting new copper wire to old aluminum wire
JLMCDANIEL wrote:

I knew they had CSA approval, but hadn't seen them listed by U.S. Consumer Safety. Their lit does say they are UL approved so I may stand corrected.
Jack

It is rare to find a device UL approved but not approved by the CSA. Might be the case here though.
I would never hesitate to use an IDEAL product, though.

Lots-o-work
Re: Connecting new copper wire to old aluminum wire

Well, I found out that the wire was coated copper so I am fortunate that I did not have to deal with Aluminum connection points.

So, thank you all for the information and I hope that it helps when someone runs into this issue in the future.

Thanks Again!

Ernie_Fergler
Re: Connecting new copper wire to old aluminum wire
Lots-o-work wrote:

Well, I found out that the wire was coated copper so I am fortunate that I did not have to deal with Aluminum connection points.

So, thank you all for the information and I hope that it helps when someone runs into this issue in the future.

Thanks Again!

Good to hear ...:D
Does anyone know off hand when the era of aluminum wire was being used in place of copper Romex?

samsmom
Re: Connecting new copper wire to old aluminum wire

I ran into a similar problem yesterday when replacing an outdoor flood light fixture, the wires to the fixture are definitely aluminum. We have not run into this kind of wiring anywhere else in the house. Alumicom was mentioned earlier, is this a connector or what? I plan on replacing the aluminum wire but until I can do that can I just keep the light off at the light switch to prevent a fire issue? Thank you.

JLMCDANIEL
Re: Connecting new copper wire to old aluminum wire

Alumiconn I believe they are available at Lowe's and possibly HomeDepot. If there is no current flowing (switched off) there should be no problem.
Jack

Ernie I believe the time line was from about 65 to 74 with most of the problems with the Al wire used before 72.

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