Anderson Powerpole Connectors, PP15 to 45, Red and Black Housing, w/12-16 AWG Heavy Duty Contact 30A, 600V ( Pack of 12 Set)

The complaint that I see for Anderson Powerpole Connectors is that they are hard to assemble. You need something to push the pin into the connector. I use an awl, but an Ice pick would work and then it is easy to assemble. Also the "order" you use to make a multiple connector (2 or more) is critical. putting a black on the right and red on the left will not mate with a connector with the red on the right and back on the left. Not a defect, but a feature. If you do not have assembly instructions, this package does not come with instructions, you need to download the instructions. I highly recommend the Anderson Powerpole Connectors. They are reliable, but also a challenge for a first time user.

Easy to use. Works great. Can be adapted for all kinds of projects.

These are so much better than the knockoff versions the quality of the plastic and the way they fit together is superior. Buy the originals, like these, totally worth a small amount of extra money.

Works very well on 12 awg wires.

These connectors/housings are an industry standard. I have no interest in using cheaper imported imitations. They're a good value for what you get; that it, a reliable connector that's relatively easy to assemble IF the Anderson instructions are followed. They have YouTube videos available. If you don't want to use the Anderson tool for assembly, a 1/8" flat blade screwdriver is much better than a pointed tool for seating the connector in the housing.Regarding whether they fit a particular gauge of wire, I can "conclusively" say that the included 30A connectors (the plastic part is the housing) fit SOME 12 gauge wire but not all. I tried stranded Southwire brand stranded 12 ga and it fit easily but that is not a type of wire that's appropriate for connections where constant moving and flexing is expected as it only has 19 coarse strands. I also tried some very flexible silicone insulated 12 gauge wire that has 680 very fine strands and it was too large to fit the 30A connectors.