WAGO 221 Lever-Nuts 32pc Compact Wire Splicing Connector Assortment. Contains (14x) 221-412, (10x) 221-413, (8X) 221-415

Absolute winner! These Wago connectors replaced old wire nuts in an attic fan install, wire nuts that FAILED miserably. A failed connection in a wire nut near the fan had caused first intermittent operation, the failed altogether. I hauled my butt up into the attic (not easy access in there) and took a look at the problem. The guy who installed the fan two years ago had done a slapdash job installing it. I found one of the neutral wires had fallen out of its wire nut connection, probably due to vibration over time - there was no strain relief on the wire. I said slapdash. I was surprised to see that the sharp metal edges of the junction box and the fan thermostat housing had not cut into the Romex yet.I reconnected the whole thing from fan to junction box a few feet away using these Wago connectors, wire staples, and some butterfly wire strain reliefs in the metal boxes. I used 4 of the double Wago wire connectors, and one of the triple wire connectors for the ground. The wiring was using 14/2 Romex. For almost all of the wiring I did not have to cut and re-strip it, I simply straightened the ends where the wire nuts had been and cut the ends off to make the already-stripped part close to the Wago recommended 11mm strip length. I needed one hand to stabilize myself in the attic while reaching over to the junction box, so putting the wires in the Wago connector and closing the flap was done one-handed, one wire at a time. Try that with a wire nut!Yeah, there is that strip length too, the strip length for the wire nuts was crazy long, like about an inch long in some cases. That is asking for trouble, but you can't really test with a meter if the wire insulation is all the way up to the screw in the wire nut. Also unless you are an experienced electrician who knows by instinct how long to strip the wire for wire nuts, it is a gamble that you'll get enough to wrap the wires together and get a "bite" in the wire nut properly. The Wago was MUCH better in these aspects, as not only is there a handy strip length gauge printed on the side of every connector, there is a small square hole on the "front" of the connector where you can insert a meter probe and contact the common conductor bar inside. I used this to verify the motor windings were not damaged (checking A/C generation while spinning it by hand), it worked beautifully. And you can SEE the connection is made through the clear plastic in the Wago. No chance with a wire nut to know that the wires were twisted right, or got a "correct" bite in the wire nut screw threads.And connecting solid conductor to stranded? Wire nuts suck at that, don't even try it. This is the reason the attic fan stopped working, the wire that fell out of a wire nut was stranded, wrapped around a solid conductor. The Wago wins here, hands down. It doesn't care about the composition of the wire, so long as a stranded conductor end is stripped to length and twisted into a general stiff shape it fits in the Wago and works great.As to the size and fit in the boxes, the wire nuts were of the mid-size variety that took 2 wires and were about almost an inch long and about half an inch wide (not sure about wire nut sizes there). The Wago's were just a bit fatter than these (the three conductor one more so, of course), but being shorter and flat they fit in the junction box and fan thermostat housing better than the wire nuts. Also, in my view the wires "lined up" better in the box and it was easier for me to see what went where.Repositioning wires was a breeze. Rather than agonize over un-twisting an already-twisted wire nut and trying to get it back into the same threads without incident, I simply opened the flap, pulled out the wire, repositioned it, and put it right back in the Wago and closed the flap, like it never happened. And moving the wire around with the Wago proved the wire was in there tightly, no movement or yanking I did caused one to pull free of the connector - unlike some problems I have had with wire nuts.All in all, I say that wire nuts are going the way of the dinosaur. For decades they were really the only solution beyond twisting wires and then wrapping with electrical tape. Sure, wire nuts are cheap, but it's just that: with how much time and energy you as a homeowner or do-it-yourself-er put into a project, are you really willing to put things to chance with wire nuts, when it is not that much more expensive to insure the job gets done right the first time? Not for me, not anymore. Thank you, Wago.

I prefer these over wire nuts. I had a few bad wire nut connections of stranded to solid wire, so I decided to try these. I really like how easy it is to make a solid connection with these. I put in the wire, close the tab, and pull. If the connection isn't seated correctly, the wire comes right out and I know I have to strip more, straighten the wire, or whatever. If the wire stays in, then the connection is good. No guessing.I can remove or add one wire without messing with the others. Whenever I need to open a junction box, I replace all the old wire nuts with these.

I have never used this type of connector before. And after using these on small gauge stranded wire I will probably keep a few on hand for such installations. Mini lighting fixtures and ceiling fans now come with a lighter gauge stranded wire that sometimes is hot hard to fasten to solid copper 12 or 14 gauge using wire nuts. These illuminate any problems with such connections and I would highly recommend him for that type of use. I am not sure what is acceptable in your local code. But if you have any concerns you could always wrap some black electrical tape around the connection once you’re finished and that should secure it quite well. But I highly recommend you check local codes before doing anything odd. Also check local codes to make sure they are accepted in your area.

Easy to use , will fit in a small electrical box

The perfect solution for connecting wires. I've been doing electric work for years, and I consider myself a good DIYer. I found that connecting wires with the twist and electric tape method is not the way to connect wires. Wire nuts do work but are not foolproof, and the nuts are only suitable for one use. I've been using a connector where you bare the ends of the wires and push them into the connector. When the cables are correctly inserted, they hold the wires and prevent them from coming out. You will have to cut the wires off to remove them. The WAGO connectors, on the other hand, have a unique feature to solve this problem. Each hole has a leaver. Push it up, slide in the wire, and push it down. To remove a wire, push the lever up and remove the wire. This method allows you to reuse the WAGO. Find more reviews on YouTube.

These made the electrical connections super easy and could actually eliminate all the jump wires yeah

I HATE twisting a big gob of ground wires together to force a wire nut on them, and cramming them back into a box. Snapping five ground wires into one of these is...well...a snap! And they fold far more easily into the back of a box, and more efficiently, than a wire nut bundle. Need more capacity--snap another one on with a jumper. Quick and very neat.They are great when you are remodeling, and may need to take a device out to drywall or paint. Snap--in, snap--out, snap--back in. Yessss. Or when you can't install an outlet in a a box before your rough electrical inspection, but need to pass power to the rest of your circuit. Snap the power wires together, and snap the device in place when you are ready for final inspection. Easy peasy.Do NOT be tempted to buy cheap knock-offs, and compromise on quality and YOUR FAMILY'S SAFELY. If you want to cut corners, your electrical system is NOT the place to do that. These are the only brand that have certified by an approved nationally recognized testing lab. The others are not certified because they won't pass testing! You cannot pass a National Electrical Code inspection if your connectors are not certified because they are not safe! The shine of saving a few dollars will fade quickly if your cheapy connectors start a house fire!