King Innovation 95125 3 Port Aluminum to Copper Lug 12-10 AWG Aluminum 18-10 AWG Copper Bag of 25

These are the only way to permanently remediate aluminum wiring without replacing the wire itself, or hiring a Copalum certified electrician to apply very expensive copalum crimps to every junction. (AlumiConn is about 1/10th the price of Copalum) The only downside of these connectors is that for a typical switch/outlet, at least 3 have to go into the switch box which makes it very tight getting all the wires back in. Another thing to note is that a torque screwdriver is not absolutely required for installation, but strongly suggested. Depending on the wire size, screws must be tightened to either 10 or 15 in-lb of torque, depending on the size of the wire. I recommend the Neiko 10573B 1/4-Inch Drive Click Torque Screwdrive, 10-50 Inch-Pound driver.

These are the best I’ve found for repairing aluminum wiring with copper outlets and switches. While I’ve had the al/cu wire nuts fail, I’ve yet to experience any issues at all with these in my home. They are a little bulky and sometimes a complex box might have to be replaced with a larger box to hold multiple connections, but the product itself is solid. I wish they had a 4-holer for rare times when it’s needed. These are a little pricey, but for DIY installation it’s ok.

Best product to come along for aluminum wiring safety in many years. I don't like the price but the job they do is worth it to save lives and homes. I have been an electrician for almost 40 years and these are the best and easiest to use. They are a bit bulky so make sure you have a full sized junction box to work with. Very difficult or impossible with shallow boxes. Cut the wall cable conductors to about 2 inches out from the wall at most. Pigtail with copper.Tighten the terminal screws very firmly. Work the terminal blocks all the way into the back of the box and then install the outlet or switch.

(I have the same review on the 2-port version of these) These are amazing! My house was a hodgepodge of aluminum and copper and I'm not helping things by adding circuits. These are much easier to put on than wire nuts and take all of the guesswork out of applying that messy goop when you're mixing Al and Cu. Be careful if a wire comes out, because that goop will get on you and anything within about a 10 foot radius (at least, that's been my luck with messy, stainy things). They are quite bulky, so they won't be the best for a box that's already crammed full of connectors, but aside from that, they're a godsend. I purchased a torque screwdriver to use with these and have found that "white knuckle tight" is just about right; save yourself the $60 bucks.

Having used ideal twist on connectors since moving into an older house with aluminum wiring - and having some of them fail (and yes, I installed them correctly), these connectors seem to give a much more secure, much safer copper to aluminum connection. I feel a lot more comfortable with these than the twist ons.They do take up more space in a gang box than a twist on, and also require a torque screwdriver, but while you may not be able to afford replacing all your wiring with copper, you can't cheap out on safety. These are a great option.

I used the two and three port connectors to pigtail copper switches and outlets to aluminium wiring in my house that was built in the early 1970s. The connectors provide a means to attach two dissimilar metals without having to worry about corrosion and using a torque driver ensures both types of wire are solidly mounted separately. If you use wire nuts that have with corrosion resistant goop you are never sure they are properly secure.

Works great, we did have to replace some of our gang boxes with newer blue plastic ones as getting 3 or 4 of these in the metal boxes is nearly impossible and I'm not comfortable with all the tight fits and bending of wires. A standard or deep blue plastic box will easily house all these and they work great for pigtailing.

These gadgets are just what I needed. They make an excellent sturdy and easy electrical connection that's weather proof! I've used them to repair the connectors for my outdoor low voltage lighting. They may be over-kill, but the weak point of the Malibu lights are the connectors, the bulbs outlast them! My big complaint is the high price.

Very good product for use in electrical one of the best